well, playis as warwick is easy and hard at the same time, cause you have to save some summoners and kill others, this biuld is for 3v3 top lane or 5v5 lane, if you want to jungle you can buy cloth armor and 5 health poth and start with the blue golem.

Armor penetration its mandatory, then cooldown its encesary too if u want to jungle, and dodge can be useful, as same as atack speed and critical chance.

i put the offensive point on ignite because of the 10 AP that warwick gains, when you use ignite, warwick first abilities hungering strike makes more dmg.

well, u have to survive without your ultimate, then when the enemy is leaving, you can use it, bloodrazor its a very good item cause your ulti will take a lot of damage, then phamtom dancer before inifinity for make some critics and tun faster when you are using your third abilitie blood scent, when u want to gank an enemy without 50% of it health, i recomend to put of this abilitie because when they see the swords over they, they runaway.
You have to spam your first abilitie but take care abaout your mana.

thanks for watch mi guide the picture below its abaout mi biuld on 3v3