No two backyards are the same and each game court is custom designed, it is difficult to say with certainty how long it will take. It depends on weather, access, terrain, permits, HOA approvals, and so on.
There are 52 cards in a deck, if you include the wild cards(joker), 54. In 52 cards there are 13 ranks and 4 suits, having the Ace as the highest in most card games. The suits are Diamonds,Clubs,Hearts and Spade. Standard card decks usually have Hearts and Diamond in Red and Clubs and Spades in Black.
Know the objective. A Skip-Bo deck has a total of 144 cards numbered 1 to 12 and 16 skip-bo cards, which are wild. Each player is dealt a pile 10 - 30 cards, depending on the number of players. Each player's pile of cards is called a stockpile. The point of Skip-Bo is to play every card in your stockpile in numerical order.