With these items you will be able to have max attacks per second which will be at 2.5 per second because of the large bonus of attack speed from the sword of divines. The rest of the items give you critical damage and life steal. Madred's blood razor gives a lot of extra power to your ultimate.

I choose to do damage runes because with the items Warwick will already have max attakcs per second.

Buy the items in order and buy the items the build to these items. Warwick is great in 1v1s and in ganking so use ur ultimate to supress them then ur Q attack followed by your w attack and just rught click on them and forget and they will be dead.

I chose to unlock the W skill first because when you are attacking something the W skill will give you an additional 80% attack speed which will help you kill almost anything. Then the Q skill should be unlock next because it can heal you and deal a decent amount of damage.

My best advise on jungling would be to wait until you level 6+ and then go threw the jungle and get all of the buffs and gang a lane. When you are level 8+ it will be easy for you to solo the dragon so i would suggest that. If you are low on health kill some of the lesser things in the jungle to gain your health back without having to recall.