Here is a very useful link with lots of information.
http://www.bytca.org/
You can also try Biewertalk.com.
Don't feel bad, it still confuses me too. I tried to get it all strait in my head, but ended up insulting some by asking questions, so I gave up.
It's been a touchy subject here in the past...do a search on it and look for the many heated threads and you'll see what I mean.
If you can get it strait, you're one up on me.
