Given my recent re-post of a link to the Xochitlahtol site I created ages ago (and I should continue maintaining :S) I had to mention the recent project I saw at The Pudding to explain some of the aspects of the Aztec pantheon:
When you were in school, did the Aztec gods get the same attention as Greek, Egyptian and Norse ones? Spurred by his curiosity for this often overlooked subject, writer and artist Gwendal Uguen created this illustrated guide to 137 Aztec gods. Coded by Luc Guillemot, this reverential introduction will help you better understand the intricate artwork and the lasting legacy of this society.
The Pudding
Take a look at this great project, and tlazohcamati!