I'm very confused on how the whole animation system works. Can someone please explain it to me? :)
Use this plugin: http://www.roblox.com/Animation-Editor-item?id=144373835 it really helps :)
You could download the many animation plugins sold for free in the catalog. Everything you need to know should be in there.
http://www.roblox.com/Animation-Editor-item?id=144373835