hello everybody!
this is my first build and i dedicate it to: Warwick, that's right.
WW is probably THE best 1vs1 champion mid-late game
what we're going to do (hopefully) is make the best WW in the game.
this build is with an attacking approach + a little bit of health

not much to explain here...
marks: WW is so squishy early game he needs the armor and magic res badly

glyphs: a bit of attack speed can really make him the superior champ in the game

seals: because of his hunters call being so important, he needs it quickly

quintessences: the 90 hp will help him not being such a squish early game

because we're going on an attacking build we're doing the masteries 21-0-9

the 9 points in utility is because he needs the mp and hp boosts + the buff mastery

we take the boots first so that we (hopefully) wont die early game, dying can really f*ck up your early game. at level 6 you should have greaves and madreds razor, if not, your going to slow (try to jungle a bit for money) by level 10 you should have blood razor, by that time you should be owning a lot.

your skill sequence should be:
E(all the time)>W>Q(spam)>R(only press R when he tries to run or if his dead meat (about quarter hp)

these spells are the best choice early-mid game, they help you gang and get more money so you are fed late game and barely need summoner spells anyhow
Exhaust: will help you if someone tries to run (press R to get him pinned down, then the exhaust so he wont get away again)
Ghost: will help you run away safely from gangs

an optional spell is:
Flash: this will help you pwn your way out of danger

Pros: always get the kill- you will be so fast you will ALWAYS get the kill
so much power, and attack speed!- your Hunters Call, and items will get you to a lot of Att speed + you get 405 attack dmg! FTW
never die!- you'll have so much attack speed and with your passive and hungering strike you'll get tons of hp!
cons: you have to be careful at levels 1-6

well, ultimately, after you get the hang of this build you will pwn EVERYBODY

just don't forget that credits go to: werewolf2010

nick in game: wolf4ever

GL & HF