First of all: this is a build which hopefully makes it easy to understand what i want to learn you, this just in a short build. So you don't have to read such a long story.
So Teemo is a champion who has to take advantage of his posion and movement speed.
so a hybrid teemo needs mainly attack speed,movement speed and ability power.
don't understand this wrong, these things are just good for teemo, ofcourse you need damage to deal more, so dont just make your teemo with only ap,att speed and movement speed.
So in this guide i will explain the chosen items, spells and orther things.
I based this guide on a bot lane carry, you might ask why? because he might be better top or mid, because of his low range. But with this build you can easily go bot, and they Toxic Shot also make it easier to farm, because you hit more each basic attack.
so 1 basic attack of teemo hurts early game more than a hit of the enemy carry on you.

Pros / Cons

pros:
- unlimited invisibilty of teemo's passive
- free small wards
- extra basic damage with Toxic Shot
- Blinding dart makes enemies unable to hit you
- amazingly fast
- an amazing farmer

cons:
- squishy
- it takes a while when his passive activates
- might be the first focussed in teamfights
- can't do much against champs with lots of magic resist

These items are very demanding for money. Therefore, each player had a very intense and effectively farming. That buy at least a basic 3 items.

Bersekers greaves: It gives Teemo early attackspeed, so more damage. +25% APS is very good to start for farming on the lane.

Nashor's Tooth:
This items is 1st big item for teemo and very usefull to spam mushrooms and blinding darts with the cooldown reduction and mana regen, this items also adds 50% attack speed, which makes is a good item for a Hybrid Teemo and it also gives 55 ability power, which makes the item even better so teemo's poison will deal more damage. So take this as your third item in any situation, it is very usefull

Malady: By the time you are level 5-10 you should have achieved your first kills/assists. After you recall feel free to start building into your first on-hit effects item, by investing in the Dagger. Ladies and Gentlemen, I present to you, Malady! Wait...You do not know what malady is? Ok let me tell you. This beauty gives you a total of 50% extra attack speed, as well as 25 ability power. If this alone was not enough, it debuffs your enemy with a stacking magic resistance debuff of 6 at a time, totalling about -25 magic resistance for your enemies. Cool huh?

Guinsoos rageblade: Best item for teemo. Increase AD+AP + increases your Attack Speed by 4% and Ability Power by 6. Lasts 5 seconds (stacks up to 8 times).

Hextech Gunblade:
As last item you can build a hextech gunblade which adds some damage, some ability power for the poison, some lifesteal for the hits, and some spellvamp for the blinding dart.

Trinity force:
This item is very usefull and very unique for teemo. increase +30 Ability Power, +30 Attack Damage, +30 Attack Speed, +15 Critical Strike Chance, +250 Health, +250 Mana, +12% Movement Speed Multiplier. UNIQUE Passive: +25% chance on hit to slow the target by 35% for 2.5 seconds; on cast, increases your base Attack Damage by 150% for one attack. 2 second cooldown. Does not stack with Sheen or Lich Bane.

Alternate items:

If you want more Ap then Ad. You can buy items for increase more Ap points. For example:

- Rabadon's Deathcap
- Archangel's Staff
- Athene's Unholy Grail

This pictures shows, Where ever are Mushrooms.

3v3 - Mushrooms

5v5 - Mushrooms