There is two diferent play styles, Agressive and Passive. Passive is when you stay back and last hit minions with Q. (Last hitting minions, creeps, and champions with Q will give you back the mama cost for your Q)

Agressive: You last hit with autoattacks most but sometimes with Q to get your mana back up, But mostly you Q your Laner. But still care for a gank.

These is only one way to paly here, Agressive. Be really poky. And when their over step. Do this combo: R(with stun)>Q>W. and ignite. Almost garanteed a kill all the time.

it dosn't really matter how you play here. You go with your instinct. And make them EXPLODE.