Thank you guys for reading etc.! This is my first guide, and will be changed with time, as I am a Warwick main! I am currently at Mastery 6 and climbing. Any feedback or tips are appreciated!

For these masteries, we take 18 Ferocity, 0 Cunning, and 12 Resolve. We take the resolve to buff our lifesteal, and tankiness, and Ferocity to up our damage out-put. For our Keystone I take Fervor of battle, which gets max stacks when we ult, giving the ult extra damage, and giving every auto attack extra damage afterwords. IF you do the math on this, this keystone is better than Thunderlord's if you can get just ONE auto attack off after your ult.

The Hunter's Item is pretty self-explanatory. The Health Pot isn't meant for use during the Jungle clear, but can be used then if needed. The Health pot is meant for use during a pinch when the enemy Jungler is invading, or when you are invading.

Ghost

Ghost is a good spell to choose because WW's E, Deadman's plate, and Ghost all give him a TON of extra Movement speed. Ghost is just a great escape AND gap-closer for Warwick if you know when to use it

Smite

Do I have to explain this?

Blood razor, and Wit's end are the best core. Overall, Blade of the Ruined King is a good pick due to the extra lifesteal. Dead Man's plate gives you extra HP and Armor. Titanic Hydra, is usually only a good pick if you're ahead. Spirit Visage will vamp up your lifesteal further, give you defensive bonuses, and some CDR. Frozen Mallet gives yo ua LOT of HP, some extra damage, and control of the enemy champs (the slow). Randuins omen is a more defensive Frozen mallet. Frozen Heart is All Armor, mana, and CDR. Once you hit full build, you can even sell your boots if you're not having issues closing gaps. Between the Ghost spell, DeadMan's plate, and Warwicks E, you should be able to get away with selling your boots late game. Also be aware of the other bonuses boots give you before selling them. Such as MR, slow resist, tenacity, armor, etc. Furthermore, Wit's end also STEALS enemy MR and RAISES your own! Wit's end's ability gets more powerful based off of the stacks you have on it (similar to our keystone). On top of this When we ult, both Wit's end, AND our keystoen will be at full power, and wit's end deals Magic damage on hit, so stealing that MR helps!

Start at the Krugs
Smite the big one immediately and use W after
Take red buff.
Kill the raptors
Return to the base and pick up first back items.
Go to the Gromp/frog nearest to top lane and Smite him.
Take blue.
Go to wolves. Kill them quickly as possible using smite if available.
Kill the raptors again.
Kill Red if it is available.
Kill the Krugs at the very bottom.
Return to base and buy the handle to your jg item.

Follow those instructions to the best of your ability. Make any ganks you can if you KNOW you will get out alive. Following those instructions should get you to level 6 around 6 minutes in. Farm farm farm, and make ganks. Invading is very easy for WW especially when he is strong against the enemy Jungler.

The pink ward should only be purchased when you PLAN to use it. It should only be placed in one of 2 places if you are on the blue side. Those places are behind the bush at red, and in the bush on the enemy's side of the jungle near mid lane that is on the right.

Disable your E for a stealthy approach on an enemy with low HP and activate it once you enter the lane
Your ult will be canceled by knock-ups, and Items suck as Mikael's Crucible and Quicksilver Sash
Your Q heals you for grotesque amounts of health. If you're fighting near minions or monsters, use it to your advantage
Squishy Champions are very weak to you. Prey on this weakness to get FED
If you won't make it to a champ in time to get an assist Try to use W. It will buff nearby allies and grant you the assist.

PROS

High Sustainability
Semi-Tanky
High damage
High attack speed capabilities
Big tank capabilities.
Low ban-rate

CONS

Easy to counter
Can be Squishy
Easy to counter
Abilities are well-known

I play Warwick in ranked as often as I can. He is a great pick in ranked if you can master him, and if you don't get counter-picked. Not many players expect him, or feel threatened by his presence until it's too late.