Kennen help, possibly in need of a teacher?

I bought him after trying him out once, and his "cheap" skin. But now i'm starting to struggle with him. I generally know how to play the few champions i own. But kennen... i sometimes just dont know WTF i'm doing -.- I'm thinking about returning him. But on the other hand i want to learn him. Now its a challenge that i want to overcome.

So, some advice on what to think about when playing with him and stuff?

The one thing i truly stuggle on is i never get stuns in on the opponent.