Super Mario Sunshine/Bianco Hills

Bianco Hills is the first proper "area" that you'll encounter in Super Mario Sunshine. Like all the others, it is split into 8 episodes and there is a side-quest of collecting 100 coins.
Episode 1: Road to the Big Windmill.
When you start the episode you get a quick view of Shadow Mario on top of a pile of goop. He'll be gone by the time you get there but that's your destination for this episode. 
Head along the stone path following the red signs and a trail of Gold coins. You might talk so some of the Piantas on the way; some of them saw Shadow Mario pass this way but they still think you're him. The downhill part of the path is covered in water so you can slide down it as in the game previews. If you land in the river at the end you can either jump on the log here or hop up to a ledge to the left a way. You can also use the ropes to cross or simply hover over. 
The stone path continues on the right, but you will meet Stus who may get in your way. In other episodes the gate through the wall on the right is open, but it's closed now because of goop on the other side. The path goes under a tall arch with bells on top; if you spray the bells a 1-Up green mushroom falls out. 
Keep following the stone path until you get to a big waterwheel. To get past this water wheel, hop up to the ledge to the left of the path, then jump on to one of the paddles as it goes round and let the paddle carry you over the top of the wheel. There is a huge area covered by goop on the other side of the wall and you might as well start cleaning some of it up. You'll find that entire trees have been buried under it as well as a section of the wall. You may also find Mini Piranhas in the goop.
Keep following the stone path until you find the source of the goop, huge balls of it rolling on the ground and into a pond. (If you spray the balls you can see that they're actually rolled up piranha plants.) Avoid the balls and use FLUDD to clear the path to their source, pile of goop similar to what was covering the Grand Pianta statue. You know what to do now, spray it until a monster appears and then spray water into its mouth until you defeat it.
When the monster is dead, a ramp rises up out of the ground connecting the stone path to a bridge. This bridge takes you to an island in the middle of the pond, but that's something to explore in the next episode. For now, collect the Shine that the monster was hiding to complete the chapter.
Episode 2: Down with Petey Piranha!
When you start the episode you get a view of Petey Piranha standing atop the big windmill.
Follow the path to the river and cross it as before. You'll notice that the gate through the wall on your right is now open; go through to find that more goop has appeared. Now the source is Petey Piranha throwing it from the windmill. Follow the path to the ramp that appeared in the previous episode and go up to the bridge. The bridge is still damaged though, so hover over the gap.
Once you've crossed the bridge, continue along the path as it climbs toward the windmill. Watch out for the balls of goop, similar to the ones in the previous episode that roll down the path. A jet of water near the top of the path will refill your FLUDD tank.
Keep on the path, using the FLUDD hover nozzle to jump gaps and go around vines as you spiral around the windmill. When you reach the end of the path, jump on to one of the platforms on the windmill's sails and ride it to the top. Jump on to the roof where Petey Piranha is waiting. The roof isn't strong enough for the both of you and it collapses, so you both fall and a battle begins inside the windmill.
To beat Petey, you must shoot water into his mouth as with Piranha Plants you fought before. Wait until he opens his mouth and then fire in as much water as you can. When he is full, his belly button will pop out and he'll fall on his back. Jump on top of him and use the Ground Pound move to push his belly button back in. (You may have heard Piantas in Delfino Plaza call this the "box breaker" technique.) Wait until he gets up then repeat. 
Meanwhile, if you don't get water into his mouth then Petey will vomit a big puddle of goop on the floor. You might find water bottles in it if FLUDD is starting to run low, and there might be a Mini Piranha in it which you can defeat for coins if you're low on health. Petey may also take a swipe at you with his arms, or maybe they're branches.
Once you stomp his belly 3 times, he'll dissolve and you'll gain another shine. 
Episode 3: The Hillside Cave Secret.
When you start the episode you see a cave entrance in the side of a hill.
Start down the path as before and right away you'll notice that there are new enemies in this chapter. You see Seedy Pods but later on you'll see Pokeys and Hens.
Follow the path as before but this time the red arrows point to a rope passing under the bridge. Use the rope and hover from platform to platform to get to a ledge on the far side of the lake. Follow the ledge right as the arrow points to another sign where the arrow point upwards. You need to get to the rope above this spot and it's probably easiest to do a Side Somersault for this, but a Triple Jump will work as well. You should now be able to see the cave so jump and hover to it and go in.
Enter the cave and you'll see a short cutscene where Shadow Mario steals the FLUDD. Something similar happens in every secret area. Now it's time for a mini-level, accompanied by some of the greatest video game music ever; a sort of "a cappella" version of the classic Super Mario Bros. theme tune. (About 50 years ago a group called the Swingle Singers did this with Bach and Mozart.) This mini-level can be very tricky as it's easy to misjudge your jumps without the FLUDD to help you, but you better get used to it as this is one of the easy ones! The best piece of advice here is be careful and make full use of the camera controls so you know where you're jumping.
Start by hopping up the sliding blocks to a light green block with two nails in it. Jump on the nail on the right and ground pound it three times to get a 1-Up; now, as long as you can make it this far, it doesn't matter how many tries it takes to get through this because you won't run out of lives.
Next comes a large number of small orange cubes that move around. Their movements repeat so on each block find a pattern that will get you to a block one closer to the far side. It takes some patience to not get caught by surprise.
Now you must cross a narrow bridge where multicolored cubes slide across and push you off if you let them. This is a matter of timing.
Finally you have to use two rotating stars as platforms to get over a long gap. In addition to rotating, the stars slow move forward and backwards, so pick your time to jump when you don't have to jump as far. There is a 1-Up above the second star it you're brave enough to jump for it.
When you make it to the end, grab the Shine... quick before you fall off again!
Episode 4: Red Coins of Windmill Village.
When you start the episode you see the windmill village and a few red coins are visible.
If you've played Super Mario 64, you'll know how this works. There are 8 red coins dotted around the level which you need to find, and they are sometime pretty well hidden. Here are the locations of the 8 coins:
The Shine will appear on a high platform above where you found coin 6. To get it, hover over to the other little tower then follow the rope up.
You may notice that toolboxes appear in this chapter. There is a blue one right in front of the first coin. There is a hologram of a red one on the roof of the building to the left, but you need to find the real one first to use it. You can find it on some platforms that have appeared in the lake near the hillside cave. The Rocket attachment will make it easier to reach some areas in the level.
Episode 5: Petey Piranha Strikes Back.
When you start the episode you see the windmill village covered in goop and Petey Piranha asleep nearby.
You might want to start by cleaning up the village a bit, but eventually you need to get to the top of the cliff behind the village. One way to do this is using a rope connected to the house with two towers, though there's an easier way. Near the cliff face there is a Pianta buried under the goop (you'll just see his hat). Spray all the goop around him then spray him clean. Before you talk to him make sure you are facing the cliff face and he is between you and the cliff. This is because as a present for saving him, he'll throw you up on the ledge above. Turns out there are quite a few Piantas who will throw you. They call themselves Chucksters and they always throw you directly behind them. Once freed, the Chuckster will start wandering around, so if you need to do it second time you may have to wait until he's in position again.
Climb on the big steps the reach the top of the hill, cleaning the goop as you go so you don't slip in it. There is another Pianta stuck in the goop here and he'll give you a hint if you free him.
Go over to the ledge to see some Pig Puffs bouncing around and one of them will attach itself to FLUDD; you should see Petey Piranha sleeping on a pillar in the distance. You can fire the Pig Puff like a rocket by spraying FLUDD, so aim for Petey using Mario-Cam and let it fly. A direct hit will wake Petey up and he'll fly around. He goes right for the village so you need to follow him there to fight.
Petey flies around spitting sludge everywhere, and the first thing to do is bring him down to your level. Nothing you can do will have any effect if he's moving, so wait until he's hovering in place and shoot him with water or another Pig Puff to bring him down. Look for his shadow if you loose track of him.
Now the battle is similar to the previous battle with him. He has a tornado attack this time but it's easy to dodge. Wait until Petey opens his mouth and squirt water into until he falls over, then jump on his belly as before. It may take longer now because Petey seems more interested in tornadoes than opening his mouth. When you land on his belly he will take off again and you must repeat the cycle.
When you've stomped his belly 3 times, he'll be defeated and give up the Shine he was hiding.
Episode 6: The Secret of the Dirty Lake.
When you start the episode you see the lake covered in greenish scum and a cave opening next to it.
Head over to the lake and you'll see that its surface is covered with toxic sludge, but note that the water underneath is clean and you can swim underwater as long as your air holds out.
Your destination is a cave behind the big windmill since that's where the pollution is pouring out into the lake. You may have noticed this in earlier chapters when it was locked, but now it's open and there is a group of logs just below it. 
To reach it, hop onto one of the lily pad boats floating near the shore. These boats were here in previous episodes so you might want to go back and practice on them with clear water. In this chapter the polluted water has made them rot, so you only have a limited amount of time to pilot your way to the next leaf before it disintegrates and dumps you in the water. With some skill and luck you should be able to make it to the logs floating in front of cave. Another, perhaps faster way of getting there is to climb up to the back of the windmill, then take a running jump off the spiral path and about halfway through your freefall, use the hover nozzle to hover to the group of logs. If you don't quite make it, swim quickly to logs and climb onto one before the toxic sludge does too much damage. 
Once you are on the logs, make your way into the cave and jump on the mysterious grey and white box. It's the turbo nozzle!! (Activating it here will make the hologram on the wall real for when you come back to the level. Carry on inside the cave until you reach another one of those evil secret levels with the cool music.
From the start of course, you need to get across the blue and red sliding platforms. These flip over but they always alternate. So if you're on a blue platform and see a red one nearby flip, hop over to it since it will be safe until after the blue one flips, and similarly if you're on a red platform. One way that seems to work for getting across is to wait until the closest red platform heads to the right, then hop to the blue platform in front of you, left to the red one, left again to the blue one in the corner, then forward a couple of times to reach safety. There is a multicolored star here with a 1-Up as a reward for making it. 
Now you see a cube in front of you. To reach it, wall-jump off the wall on the right. This takes some practice but there is a ledge below to catch you if you don't get it. As soon as you land on the cube it starts moving, ride it while trying to stay on top as it rolls. It goes almost all the way to the next platform and you need to do another wall jump to reach safety again, this time with no safety net. Dash past the sliding prisms so you don't get pushed off, and hop to the next cube. This goes straight up and passes by a second 1-Up. Now there is a more complicated version of the sliding platforms obstacle. Getting over this is tricky and you may have to do a bit of back-tracking to avoid falling off, but one route that seems to work is to start when the nearest red platform is moving past you to the left, then keep more or less to the left as you try to progress. Beyond this is the last platform, so claim your Shiny reward.
Episode 7: Shadow Mario on the Loose.
Ah, a nice easy Shine. You deserve one after the previous episode. Shadow Mario returns and you just need to keep chasing him around and spraying him, just as when he kidnapped Peach in Delfino Plaza. If you lose him, just keep searching and follow the evil music. When you've sprayed him enough he'll fall over and give up a Shine. (Episode 7 in every level involves catching Shadow Mario.)
Episode 8: The Red Coins of the Lake.
When you start the episode you get a view of the lake. You may have noticed additional windmill being added around the lake as the episodes progressed, and now the construction is complete with tall windmills connected by ropes scattered around the lake.
You need to collect Red coins as in Episode 4, but this time all the coins are located above or near the lake. If you've freed Yoshi's on the island then there will be a Yoshi egg right where you start the level, but you don't need Yoshi to get the Shine for this episode. The Rocket Nozzle will make getting to the Red coins easier though. Get this from the platforms on the lake just below the hillside cave entrance.
The Shine will appear in a little alcove in the big windmill, hover over from the windmill blades but if you still have the Rocket nozzle it will be easy to just rocket up there.
100 coins Shine.
You can get 100 coins in several episodes, but we recommend Episode 8 and unlocking Yoshi first since you can get a large number of coins by eating bees. Some of the coin counts listed below are approximate. There are many more coins than you actually need here.
The Shine appears on top of a windmill next to the wall.
Secret Shine #1.
Objective: Collect 8 Red coins in the Hillside Cave secret area in less than 1:00.
Start Episode 3 and enter the Hillside Cave as before. As with every secret area, you can replay it for another shine. However, this time you have to get red coins within a time limit. Luckily, you have FLUDD back.
At the start is a red button; ground pound it to make the red coins appear and the timer start. You have one minute. The first red coin is on the left side of the sliding blocks in front of you. Get Coin #2 from the left side of the set of small orange cubes. You just need to land on the corner cube since it will lift you up to the coin. Hover along the left side of the cubes to the far corner and get Coin #3 the same way. (You can now get two more coins on the cubes but it seems to be easier to save these for last.) Now look into the distance to see a star shaped platform floating to the left. Jump and hover over to it and grab coin #4. Now hover toward the green bridge and touch down either on the bridge itself or on one of the cubes that are circling it. Jump immediately and keep hovering to another floating star; there are two and you want the one further from the start. This has coin #5. From there is easy to hover to the other star on this side of the bridge, taking you back toward the start again. This has coin #6. You're now in hovering distance of the small orange cubes again, so get to the nearest corner to find Coin #7. Finally, hover along the side of cubes to land on the next corner for the last coin. Be careful on this one because the corner cube doesn't stay in the corner; look to see where it is before trying to land on it. The timer stops after getting the last coin so there's no hurry to get through the rest of the course to where the Shine is waiting.
Secret Shine #2.
Start Episode 6 and enter the secret area for the replay. This time, you get 1:30 to get the red coins. (Before you enter this puzzle while you are in the cave DO NOT get the turbo nozel!!!) Hover over to the first red coin in the middle of the red and blue sliding platforms. Touch down on one of the platforms and hover to the next safe spot. Coin #2 is on top of the star here, just above the 1-Up which you might as well grab. Don't bother wall jumping for the next gap, just hover to the cube, touch lightly and hover onto the platform with the sliding prisms. Coin #3 is between them, just touch ground long enough to collect it. Then hop onto the cube which acts as a lift. For this section you have to stay on top; collect coins #4 and #5 and the second 1-Up on the way. Watch the shadows to see where you should be standing. Coins #6 through #8 are on the second set of sliding platforms. These are much easier to navigate with the Hover nozzle so you probably have more time than you think. Get Coin #6 in the far left corner, but wait until the platform is under it. That way you can get the coin, touch down and hover back. Get Coin #7 as you hover to the opposite corner, and get Coin #8 using the same maneuver as for Coin #6. When you have the last coin the timer stops and it's just a leisurely hover to the Shine.