Warwick may be old... but his champ design isn't terrible and you ca do well with him. Being smart when you play him and knowing your limits is key. Before playing Warwick you need to forget about trying to one-shot everyone with your ult... it doesn't work 9 times out of 10. You play him as a semi tank who is able to sit at the front line using your life steal to "extend" your hp bar.

this rune page gives you 30% CDR for spamming q's and allows from more ults.

Strength of Ages is life as a jungler... this is optimal... warlords looks good on him and can work but... is not as reliable as 300hp and warlords doesnt work on jungle creeps

Spirit Visage- 10% CDR gives you 40% with runes, more heals, MR
CINDERHULK!!!---Go cinderhulk... bloodrazor is trash. 4% hp as physical damage isn't that great... the benefits of being tanky early helps more, plus immolate is op.
BOTRK- Good active, lifesteal, on hit, attack speed... this item is made for WW
Deadmans- Armor=good, HP=good, Move speed=good, Awesome flame cape=good
Titanic Hydra- gives you waveclear, it's on hit, it scales with your hp which you have lots of
Swifties- bloodscent+swifties makes you quick asf

Good clear... health pot not usually necessary only for an emergency invade or some dire situation where you accidentally get the wrong skill or teammates don't leash.

Only play if you're confident.

Almost always farm till 6... redbuff is life