-The reason I shose teleport as a summoner spell is that if you play with a team that communicates well, and uses alot of wards (You should be) you can use teleport on wards.
ex. Bot lane is being push a tiny bit passed river. Your support was nice enough to ward enemy bush near the edge of the map. You teleport to that ward, and you snare the carry. Either the enemy team wastes a flash, or you guys shut down their carry for the next little while.
-WARDS ARE IMPORTANT!!!!!

-Trundle is very useful as a damage dealer or Tank, so don't be afraid to try out all different builds
-Trundle with a Wriggles can farm in the jungle very quickly, make sure you get one Immediatley
-Trundle is also good with teleport instead of flash, since you can ward anywhere with your Wriggles
-Start Wolves
-WARD SMART!!!!
-Get a good skin, nobody wants to see your ugly *** on the battlefield

-Rammus is mainly effective against AD champs. So when you see a team with a dumb comp, make sure to get him
ex. The enemey team goes Talon mid, Darius top, Taric support, any ADC, and Rengar Jungle. Rammus will shut down them pretty well.
-Rammus is better at 1v1's than you'd think, he is not just a tank with some CC. Just simply QRWEQ.
-Rammus ganks are awesome ganks. Make sure that you charge up your Q a liitle before just flying in for the most movement speed
-You gotta have your W up as muc has possible when enemies are around

-Olaf really isnt that bad after the S3 changes, just harder to chase now
-Ok, the ult passive is now an active, but still not that bad
-Instead of Black cleaver, to be tankier build a Randuin's for the health (Good for his W)
-Olaf is just nasty and still a bit OP, dont be afraid to kill people
-Ninja Tabi, Mercury Treads, and Berserkers Greives are viable boot options

-Skarner is just too tanky, so make him tanky
-Only ult when necessary
-Mobility is your friend

-HP!!!!!!!!
-GO WHERE YOU PLEASE!!!!!

-This is no joke. Period.
-Get a STRONG leash
-Start ganks with your wall