Covered up my MS Tribe tats to moonlight in the Android Army...

So, Thursday night I lost my Lumia 900 in a cab. Unfortunately, it was almost dead and it seems to not have been turned on since because I can't track it. The release of the HTC One piqued my interest in Android once again, and today I placed my order. So, at least for the next year, I'll be joining you good folks here in the AA. Can anyone suggest some good Android guides, anything from starter to power user? What are the most awesome new features of the platform (last I used was Honeycomb)? How can I make the most out of the switch? Any cool app recommendations? Recommended customization options? I'm really excited to try out a modern version of Android, although it's bittersweet because I really liked WP/Lumia. Hopefully I'll still be as enthusiastic six months from now!