This guide is mainly for people who don't know how to build a jungle olaf, this build also could work for laning, just a different skill order.

The rune set i chose is what i used for caitlyn and then decided to use for every other ad champ that benefits from it the most.

I chose 21-9-0 for masteries because the offensive column gives a lot more bonuses like extra damage, a small thornmail to minions and extra damage against minions. The defensive column is so you can jungle with a lower chance of dieing.

Typically, you want to start at blue so you can use abilities and not run out of mana, you only need it at the beginning of the game, then just let the ap carry get it whenever it comes up. After you get blue, go to red and use the other health pot there and then if posssibly, gank one of the lanes or go to wolves. What i do is get 800 gold to get +1 boots and a vamp scepter. If you plan on doing this, go to wraiths and then golem and then head to wolves and repeat that until you get 800 gold. As olaf, you want your red since your melee and won't have enough speed to keep up with the enemy when ganking, so you engage with the axe and then head up and pound on their face until they die and be sure to use reckless swing whenever it comes up because the amount of true damage it can do. The rest of the path is up to what happens in the game and what you need to do.

You want to level up vicious strikes to get the bonus life steal to get more life back in jungling. After a few games, i realized leveling up reckeless swing is a lot better than the axe because it does true damage and does **** loads. Ofc level up the ult whenever you can.

You start off with clother armor and 2 pots so you can take more beatings from blue buff and still be able to take red right after it. You wanna get +1 boots and the vamp scepter to get around the jungle faster and more life steal when vicious strikes is down. Next, you want the greaves for more attack speed since you attack slow when not hurt that badly and a lantern for free wards, lifesteal, and armor. After you get those two items, you want a bloodthirster. This item is your main damage giver and extra lifesteal. Once you have a bloodthirster you want a zeal for more attack speed and crit and movement speed. Once you have a zeal, you get a infinity edge for more crit and because this is your second main damage giver. Once you have that, you upgrade your zeal to a phantom dancer for more crit chance, movement speed, and attack speed. As the final item, you want a frozen mallet for extra health, a little damage, and the slow effect. If the enemy team is stacking a lot of health and its late in the game (35+ mins), sell the lantern for a madreds bloodrazor. If you still need attack speed, sell the greaves for another phantom dancer.