Well hello there..

I've been playing AD teemo for a long time now, and felt like contributing with a guide.
I, personally think AD teemo is much better than AP and have always felt like that. Please do rate this guide, but if you rate negatively then please tell me in a comment why.

This is also my first guide, so bear with me.
Thanks.

Pros:
Strong auto attack.
Incredibly fun through the whole game.
Beast early game.
Map awareness.
Lots of CC

Cons:
Squishy untill frozen mallet.
Shut down easily with exhaust/blind
Low dmg-output between getting your berserker boots and madreds.

Recommended summoner spells:

Exhaust: Adds to the CC, you can utterly destroy phys dmg champions with your blinding dart and this.

Flash: A handy "GTFO" button that can be used to escape over walls and such. A "musthave".

Ignite: Not as handy as exhaust, but still a nice addition to your dmg.

Less viable summoner spells:

Ghost: Some people use this, though I personally think his W is more than enough.

Teleport: For added pressure on your lane, and pushing.

Clairvoyance: Extra map awareness can greatly help your team.

Cleanse: Works fine in addition to flash, though you would want an offensive summoner spell too.

NO GO's...

Every other spell that I havent mentioned...

Early game:

1. Doran's Blade x 2

Doran's blade is incredible for teemo, with 2 of these you will shred opponents in mere shots.

Some might have seen Teemo start with things like lifesteal and such, but that isn't nearly as viable as this.

2. Berserkers Greaves

These are excellent, though if you want to have even more mobility, try boots of mobility. I've been experimenting a little with them, but decided that you gain more from Atk. Speed