Congrats on your purchase! It's definitely my favorite
mod, though the Provari is a
very close second
Best point of advice I can give you is to have fun with it

Second-best point of advice is to forget all about LR attys/cartos. They'll work just fine, don't get me wrong, but are totally unnecessary with
any variable device. In fact, with higher resistance you're better able to fine-tune your hit to your liking. LR stuff will drain your battery a lot faster, too, though you should still be able to get a full day or so on a charge even with 1.5 ohm attys
Happy
vaping!
EDIT: oh, and we have a whole thread going on regarding the Darwin (not that it's the only thing we discuss in there, of course). Feel free to come on over and join in
http://www.e-cigarette-forum.com/forum/nhaler/151096-darwin-evolv.html