Taking a camera repair class is a great way to learn a new hobby as well as make a bit of money. Often continuing education classes or vocational type programs will offer weekend or evening classes on the basics of camera repair. These are low cost classes that will cover all that you need to know to get started.
When you are considering a camera repair, read through the policies of the camera company to make sure that you know what to expect in costs and in when you can receive it. It is important to know what is happening at all stages of the game with your camera.