I am using a variety of ways to learn them.

First, I came up with my own mnemonic devices for the 12 most common major/minor chords that were on a chart I printed out. I came up with some idea, phrase, saying, picture, etc based on each chord shape. I wish I could tell you I memoized them right away but that just didn't happen. I did study them, yes...but I didn't really start remembering them until I put them into practice and started playing. So I still have a few I need to learn. But that has been the best way for me to learn the chords...is to just have a chart handy (I have mine taped up in practice area) and play, play, play. Do chord change drills and play songs with those chords. Lisa has some great lessons that involve chord change drills and 2 and 3 chord songs.

I have also been exploring the Song libray more and finding anything that interests me, especially if it has new-to-me chords. So now I'm learning some new ones I didn't even know existed and really challenging myself.

I agree with Faith, learning is so personal and individualized....you will find what works for you, just don't be afraid to find new ways of learning.