Now this is one of my favorite champs. He has so much pottential for builds. I've seen good ad ap hybrid and even a good Teemo tank. But my personal favorite is the AD Teemo.

Pros:
He's a good balanced Champ
Has Fepic (Freakin Epic) skins
He can be molded into any game
One of the top ranked uses Teemo exclusively
His bombs stack now :D
He's awsome (he can run away from a brawl

Cons:
Squishy as Jello
They nerfed his blinding dart>.>

For my summuner spells i use heal and exauhst because these 2 are a good foundation for starting to play teemo. If later as you get better as Teemo or you just need more damage with your poision get ignite and its mastery. Teemo's poision in my opinion is a free ignite but, whatever floats your boat.

Please for the love of god! DO NOT!@! use your ult a small mob wave. I mean mabey a big one where the have 5-10 mages in the back but not for normal laning. For 2 reasons.
1. You could have used that as a ward.
2. You can use them in combat for some damage.

Usually, me playing as Teemo early game, i try to max out my poison first. this gets you extra damage from your attacks. So at about level 7 or 8 u have 100 attack damage and pretty good attack speed and crit. chance skills. Now if your facing a champ with skill shots or karthus's Q ability you may need to switch out your 1st skill blinding dart with move quick so you can easily dodge those move and waste thier mana. Now with your armor pen. runes don't be afraid to attack tanks it helps to keep them unfed.

By this point you probably have an Infinity Edge, you can crank out some damage. If you got a good game goin stand back a little and donn't be rash.(Its gotten me killed alot of times)
Use blinding dart as a life saver for your friends or on that pesky ad champ. If you abuse your blinding use it as a good finisher it does near 300 damage at level 5 and it has more range than a normal attack.

Now this is the end of the line. I usually say all"WITNESS THE POWER OF A FULL TEEMO BUID!@!", because its op. You as a fully pimped out teemo can do 900 damage on a champ who refused to get armor, and with that black cleaver you can cut down tanky champs fast while healing any damage with life steal( you have a high percentage) so focus the good champs. When in a team fight even if you died you probablly left your mark so the rest of your team can finish the rest.

Remember to say /taunt, laugh, etc. at thier nexus, or yours if you lost.
also in the next chat share your gg's no one likes sore winners/loosers.

It's been fun making this.
Good Luck
Spy 4360