You could also come up with a set of songs that you like that would allow you to practice your chords. A lot of rock and pop songs are made up of pretty standard progressions, but playing along to a song on your stereo versus simply playing changes to a metronome may expose you to the "feel" of when and where chord changes are made in a song.

This is a biased R.E.M. fan talking here, but "Man on the Moon", "Country Feedback" and "Wendell Gee" are 3 tunes that gave me a lot of practice in changing a full selection of basic chords at a very non-threatening tempo:)

I still recommend the tutorials on this site, btw...I'm just suggesting another way to augment the learning process.