I haven't posted here in a long time but I'm Baaaaaaaaa-aaaaacccck!
Check out this YouTube video from Jody Fisher. (He is awesome...)
This is the best method I've ever seen for speeding up learning chords and changing chords. It might be a little tough on your fingers when you're first starting to learn chords but I promise you, it really works great by comparison to just forming the chord over and over. So much faster, so much better.
Search this on YouTube: Jody Fisher Guitar Quick Tip - "Learning Chords"
PS - I'm posting this in all the "chord" sessions in LMG so people at various stages of the course and trying to learn new chords will see it.(Sessions, 5,6,7,8,12,20)