This is how I play.
Start at the two golems, don't une smite, just hunter's call at beginning of the fight and use an health pot
After it, go to the lizard, start by killing the smalls ones, and use hungering strikes each time you start to lose life, use too an health pot and the mana pot.
Go kill the wraiths, use your last health pot and start by the blue using hungering strike one time and hunter's call.
Kill the wolves using only hunter's call.
Go to the golem, use smite, hunter's call and hungering strike each time you can.
Go kill the two golems, the wraiths, and the wolves.
Back and buy berserker's greaves.
Let's redone same way (north to south), Take the two buffs, and go gank the line who need!


Jungle is important, but team is more important!
if anyone need you to def his line a little time (back for buy, low life, ...) go and do it.
You mustn't disadvantage your team during your jungle

Even if at start you'r not very very good, at time you'll get stuff, you will be quickly able to make some very offensive actions, with red buffs, you could kill lot of people who is pushing or laning alone if he can't make some counter action, he's condamned.
You can play very offensive with your hungering strike, the enemy mustn't farm, you must.

Warwick can't be harrassed, his lifesteal and hungering strike will make you recover your life quickly.

Also, don't focus the tank, if possible, even if the enemy's don't get life, just focus the only one who don't get armor, it will make you recover the most life possible.