The first rule of ap warwick is ABS, always be slapping. Warwick is a decent jungler, okay at top lane, but he rules the mid lane with his infinite sustain. The unique passive on nashors will make your ult hurt and your autos destroy the enemy midlaner's rectal cavity.

Pretty standard for an ap carry, the attack speed glyphs will help you slap so fast the enemy carry will be ensaddened, and rectally split in twain.

Standard ap carry masteries really, nothing special here

Max your q first for harass and infinite sustain, warwick's autos, or slaps come into play later, his q slaps will always be your best move. Take and max your W second to increase slap speed and help you sustain with your op passive. Max your E last, it's an okay ability and will help you chase, once you win your lane or if you need to start roaming, turn it off so you can stealth gank, but keep it on in lane. Infinite duress, WW's ult is a great suppress to lock down your enemy midlaner to finish off the kill, or to keep in one place to q and kill them, with nashor's it will also do some decent damage.

Nashor's is your most important item, it will make your auto slaps hurt, and your q slaps leave a burning hand print on the face of the lame enemy midlaner. The revolver is also important because your vicious q slaps will heal you for even more, making it extremely hard for the enemy team to kill you. Void staff will offer more butt-penetration, and let you blast open the other teams anuses if they try to build MR. DFG gives some more CDR letting you q slap more often and the death hat will just make you slap even harder

Remember to Q and auto as much as you can, when ganking turn off your E and ult to gap close, even though you can sustain you should still be careful, midaners with poke can be dangerous so just try to farm up and q when you can, you should get fed pretty easily, try to pick up as many kills as you can, even if you have to steal. Your the ap carry, they probably are yours anyway. But remember to slap everything in sight most importantly