TO play teemo you need to build tankyness and speed. After you got a nice build get you get w 1st then q and NEVER TOUCH e! Poison darts are pure crud even avoid spending any skill points on it to keep it away! Later in the game you should spam your q on enemys to annoy them to death! Also with your epic build you can never die and they cant catch u because of hyper speed! In team fights just place a mushroom and stand perfectly still for the whole then pop out to ks!
BLAM!! now u know how to perfectly play teemo!