I have just found what I think is a very useful site for learning chords. You can pick and choose what you want to practice and then print those selections on one sheet and they are large and very readable. Also you don't have to buy anything even if you register on the site which I did.
Here is one where you don't have to register, for those who don't like folks charting them. http://www.harmony-central.com/Guitar/chord-chart.pdf
Also your tag doesn't seem to go anywhere, and you'll find that this one gives you much more then just chords it allows you top transpose from one key to another.Ship
I've used the chordguide.com site many times. There are several such sites, though I hadn't seen Ship's before. A favorite of mine is: http://www.chordie.com/chords.php
It will even play the chord for you to compare your strum. Also, the forum on that site has some VERY good people for getting answers to your git questions.
Sign up for Acoustic Guitar Notes—the weekly e-mail newsletter that delivers coverage of players and gear, lessons and technique tips, and advice about performing and recording. Get it now!