This is my first not so deep guide. I assume that you know a bit from LoL. This build is eventually only for the part it has got now. What do you need more? When I'm looking for a guide the top part is always the only thing I look at (together with skill order and pro's/con's) so i will put those in too.

The Sequence I always use is (R) [Q] [E] (then [W] if you are planning to stay for a bit longer.

Pro's

1. High [E] dammage
2. Quick escape methods ( [R] )
3. Fast minion farming. ( [Q] )
4. Perfect enemy chasing.
5. Even with a bad team there's a chance you can win.
6. Easy to play.
7. When feeded, the enemy team will eventually all [ALT-F4].

Con's

1. Can be squashy in the beginning.
2. No stunns (that's why I pick exhaust).
3. Can get bored.