How to service an air conditioner 
Make sure the unit is turned off either at the on/off switch or by shutting off the circuit breaker. 
Check the small copper pipe connecting the unit to the house. 
If it feels hot, the unit's coils are most likely dirty and need to be washed.

Rake any leaves and debris away from the unit before you start to service an air conditioner. Take the cover off the unit, and locate the air conditioner coils (they look like a car radiator).

How to tape and float drywall 
Cover the nail or screw holes in the drywall. 
Start with the top holes and move downward. 
Fill the holes with premixed drywall joint compound using a 2-inch (5.1 cm) putty knife.

Allow the putty to dry, then sand the rough points. Apply a second thin (but wider) coat using a 6-inch (15.

How to become an mri technician 
Learn about the responsibilities of mri technicians. 
An mri machine is a magnetic resonance imaging machine, which uses magnetic fields to create two-and three-dimensional images of parts of a patient's body to help with treatment and diagnosis. An mri technician is responsible for operating an mri machine to conduct tests on patients.

First off, you will need a great deal of technical knowledge to operate an mri machine. You need a thorough understanding of how the technology works as you'll be operating the machine and may be responsible for detecting any problems a hospital's mri machine might display.

How to cure metatarsalgia 
Rest the affected foot. 
Minimize pressure on your foot and allow it to rest whenever you experience pain. Elevate your foot after any extended periods of standing or walking.


Stop any physical activity if you notice it bringing on pain or making it worse. You may need to avoid higher impact sports like running, basketball, football, or activities with a lot of jumping or impact while your foot heals.