I would start of the game with doran's blade and a health potion. Then I would get a another doran's blade. Once you're done get boots of swiftness and save up for recurce bow and a dagger. Sell one of your doran's blade and get sword of divine. Now I would get stark's fervor but if you want you can get frozen mallet first. Get both of them and then get a hextech gunblade. Get bilgewater cutlass first then get hextech revolver. Then get phantom dancer for attack speed. Now u would have a fairly high attack speed damage and lifesteal.

- Put mushrooms everywhere in jungles so you know when they will try to gank.
- ignite and poison together can be really helpful.
- Chasing someone is very easy with teemo but teemo is an easy target to gank.
- Use your item to help you
- save "move quick" for running away.
- play safe and harass then when health is low..... strike
- Teemo's blind dart can help your friend or yourself
- Use exhaust to escape or help you chase your enemy.

~pros~
- great for chasing down enemies
- good for kill stealing or killing solo
- high chance of escape
- farms quicker
- You know when someone is trying to gank

~cons~
- once your slowed/stunned teemo you get damaged pretty bad
- hard to kill a tank
- teemo is an easy target to gank