So I have been playing League for about 1 year now, and I have tried a lot of the champions, and i decided to make a guide for Kennen.
Kennen is fun as hell to play, and once you learn him, he definitely can tear up some people.

Like loads of other champion, can you build Kennen defrient ways , I personally like building my Kennen as AP. but there is a few other things that you can do that i believe set you apart from a few other Kennen's.

Pros / Cons

PROS:
very good lane fase.
good at poke, low level, high damage etc
Carry as AP is possible (can't say ad)
AoE Stuns (every 3rd ability)

CONS:
Squishy, Can be CC'd easily
They will focus you cause you are strong.

Masteries

for the MASTERIES I use the Pretty standard 21/0/9, i think that damagde output early game is completely OP

Summoner Spells

Ghost, what can I say, its an amazing summoner spell, Use for any situation, Running away from a gank, chasing, getting out of tower range, Anything. I get it on almost every champion I use.

Flash is a overall good spell, but it is very situational. It will save your life if you are close to a wall and can blink over it, but if your in a lane, Ghost will be better if you know what your doing.

OR

Ignite is always nice for the extra damage and the 50% healing reduction, also a good pick, but it just seems to be less important on Kennen to me.

Tips:
1. POKE POKE POKE, I can't say it enough. Kennen is great for early game poke, so why not utilize his key use.
2. in team fight it can be a good idea to interrupt with lightning rush and mealstrom.
3. Be there for every Team fight, you can be a Huge TF changer.
4. Remember your Role, Kennen is there to Stun, lock down, interrupt, and WIN.
5. Play agressive with Kennen then you counter almost every champ

now your ready for some Kennen plays.


Thank you for reading my guide


and sorry for the few pics, cant get it to work:(