Need a little assistance.

I think now is the time i should really be knowing and finding out for example what makes a Amin7 a Amin7 and everything like that. So i need to learn my music thoery, ive seen lots of little lessons on these forums which are very helpful but can someone recommend me a site which offers me everything i need to know for guitar theory. I believe this will make me a much better guitarist. Also one that is fairly easy to follow will be a help, because there is a lot of jargon in the theory.

Thanks

Try this lesson I found on UG. I use it all the time.

http://www.ultimate-guitar.com/lessons/for_beginners/learning_music_theory_the_beginning.html