Hello Guys and girls, I made a easy guide that everyone can follow and climb with hopefully. Also at the start of a game you should mute all players, so you won't get mad or anything and it will give you better results.

Flash : Flash is a no brainer it is a easy escape tool and mostly everyone takes it.

Ignite : Ignite is a good spell on Teemo as it is just like you poison and can help burst down a champion very fast.
Teleport : Teleport is also good on Teemo so that you can move around the map faster and place your shrooms everywhere.

There are other summoner spells you can take on Teemo but it is better if you take flash to ignite or Flash to teleport

Blinding Dart
Blinding dart is really important because it blinds the enemeies auto attack, which is really good against ADC's or other auto attack champions like Jax.
Move Quick
Move quick is great way to get fast and poke you enemy while they are running away or run away quickly when you are getting ganked. Also the passive of it grants you movement speed of no one attacks you for a few seconds.
Toxic Shot
Toxic shot gives you more damage based on your ap and it poisons your enemy, so I always get it at level one as it is a great way to harass your opponent.
Noxius Trap
Noxius trap turns Teemo into the devil. It is so annoying to deal with if you don't got sweepers. Try to place it where people will walk into it and when placing it in lane place it close to the way so the minions to run into it. Never really place it in the pathway of the scuttle in the river because that just ruins it all.

Arcane Comet
Arcane Comet is good on Teemo because it proc's every time people just run into Shroom's and it will always hit because the shroom slow. It will do a lot of damage to people.
Manaflow Band
Manaflow Band helps Teemo a lot as you use so much mana placing your shrooms and everything else. Early game Teemo doesn't have that much mana so it can regain some of your mana for you.
Absolute Focus
Absolute Focus gives you extra damage if your life is above 70% which should be the case most of the time. Just dodge all skill shots and you should be good.
Scorch
Scorch Your first ability hit every 10s burns champions. It has very good synergy with Teemo's Toxic Shot.
Legend: Alacrity
Legend: Alacrity grants you attack speed and you can combine it with Nashor's Tooth and you can attack really fast.
Coup de Grace
Coup de Grace helps you a lot because when enemy is low hp and goes a steps on your shroom's it will deal more damage and have a higher chance to kill them.

Pros / Cons
Pros
+ Amazing poke harass
+ Fast boyo
+ Personal ward
+ Invisible
+ Counter's ADC
Cons
- Very prone to CC
- Little team fight presence
- Could get flamed a bit more

I used to play Teemo for a long time and did pretty good at him he helped me climb through a little bit of silver. Teemo is a pretty hated champion because he is "cancer" but if you don't like Teemo just ban him and stop hating. When you master Teemo you will know how to beat him and know where to place all your mushrooms. If you are playing Teemo try to avoid champions that have the ability to get you out of your invisibility and ability based champions, so your blind won't be useless. When you go in a bush and they saw you try to avoid their aoe abilities so you don't get damaged. When you go in a bush and they see you and they just gather around you its not over yet because you still have a chance to escape just play it smart and use flash to get away from them fast. Anyway thank you for taking your time to look at this guide and I hope it helps you win games.