Hello to my ap teemo build. I play only top lane with him because he can destroy any tank easily. With his E maxed he is killing machine.

PROS :
So mobile
His poison deals extra damage
With his R u can slow someone
Good in teamfights
Can play any lane (expect jungle)
AWESOME PASSIVE.

CONS :
If zed akali , or Renekton is on opponent team , you will probably lose.
It is all about how well you place shrooms in fights.

I made this Champter just to say that teemo is so good at farming ,because its easy to get farm because of your E. That easy farming allows Teemo to get last hit very easy , allowing him to also get money faster.

Teemo has very good abilities. If you master them , teemo can really be deadly machine.
His 1st skill is Q.
I personally prefer to max E first , but many people say I should max Q.
I dont max Q because I think E is so much better against all those tanks at top lane.
Your E constantly deals damage to them , making them easy to defeat.
His 2nd skill is W.
I really like his W because he can use it both in offensive and defensive way.
Use your W against tanks like Renekton to escape , and use this combo : W - Q
It makes your escape sucured , because of blindness and your speed.
His 3rd skill is E.
This is skill I max first because , as I said already , I like to deal damage to tanks with it.
Teemo's last ability is R.
Those shrooms man. His R can inflict so much damage , especially at point when he reaches lvl 6 , then opponeent steps on it , and you just use all your abilities and it's free kill.

All I have to say for this is , that Teemo is not very good at teamfights , so if get ganked a lot or of you do teamfight late game , your team will probably lose it. But , if Teemo plays 1v1 he can destroy ALMOST every champion he plays against.