I found Uncle Rod's Boot Camp great not only for learning chords, but learning chords in some sort of logic. You practice all possible chords in the Key of C, for example, before moving on to the next key. You can learn chords from a chart, but the repetition of doing only one key at a time helps you understand what chords go together, sounds great (since they all go together), and helps your fingers get used to common chord changes.
You can practice A then B then C, but it won't sound as great, and you probably will rarely play a B and then C chord together in an actual musical setting.