If you want to learn how to make avatars, then first you have to learn to use Window Movie Maker (to get scenes) and an animation maker (either Animation Shop or ImageReady)
Animation Shop is part of Paint Shop Pro while ImageReady is part of Photoshop. I personally use imageready to make my avatars, becasue i have Photoshop and prefer it over Paint Shop Pro. It all depends on what you have. Also, if you have Paint Shop pro, got to Matto's thread. He has a basic avatar making lesson. Use that to make yourself a basic avatar. After that, learn to make some on your own by exploring whatever program you decide to use.