Here's a thread that may help a bit to get learning all those chords and the keys to which they belong:
Chords in a key- why should I know them?
Also, check this one out:
Guitar Chord Chart - Chords Arranged by Key - FreeHand | Digital Sheet Music Downloads | FreeHandMusic.com | Notes
That has a real nice free download for a one-page chart that gives you the most common chords used in each key, sorted by the majors, relative minors, and alternative chords. It's a handy tool for when you're looking for that illusive chord you can hear in your head but can't seem to find with the strings.