Cryptozombies is awesome :)
If you complete all 6 current lessons before the 20th you get blockchain assets for their upcoming games, and 10 Loom tokens (allowing you Developer access to the Loom Ethereum development environment) !
You still get one Loom token for completing even just a single lesson before the 20th though :)
I can't wait to see what they've got planned for those :)
IF you ever need questions on Solidity and Smart Contract development answered, head on over to Delegate Call and ask away :)