Sounds like you've got the right idea. You'll likely source new chords from a book or by looking on-line. But hey, for all of you (maybe some of you already do this) here is another thing you can try. When you're just taking a break from formal practice, grab your guitar, setup a nice clean sound (maybe add a little Chorus effect for fun) and then just start combining notes to make up your own chords. Any combo, anywhere on the neck... with or without open strings. See what you come up with.. most of them will sound bad, but you'll probably stumble on to some of those cool ideas Maggior was talking about.

Here's a couple of simple examples for you... if you know Dm and Dmaj, great. Now, go ahead and play either,but just leave the high E string open, so you're only fretting on the G and B strings.

Got that Cmaj down pat? Ok, slide the whole chord shape up two frets, so the root that was C on the 5th string is now D... BUT, leave the open strings open (don't play the low E string, only the high E).

With a bit of fun experimentation you can come up with some neat sounding chords.