I think that the learning curve for lsdj is much steeper, but mostly because it becomes the starting point of a lot of people's, myself inculded, foray into tracking. Probably why there's an abundance of tutorials for it instead of nano.

Nanoloop is incredibly powerful, so my only other advice would be to experiment as much as possible with all the parameters. You'll find interesting ways to make a hi hat sizzle, or make a clap/snare with the arp setting, or make the "S" channel wobble with the lfo parameters, or a sub-kick with an infinite envelope and pitch command. The posibilies are almost limitless, so go ham.