i go for

9 armor
12mr
15 ad

i think movespeed is better but i aint gonna waste money on that **** man

so yeah since u clear jungle so fast with enough hp i go for 21-9

the normal stuff, cmon its easy just REK EM ALL

hi this is my guide on olaf, the BERSERKER

op champ man, play him in the jungle clear super fast be level 4 by clearing all the camps before the enemy jungle has finished his 2nd buff, then just gank top and GG man if the enemy jungler tries to countergank just kill him too OMG so OP!!!

after you've done that just farm in the enemy jungle and kill that filthy jungler man, so EASY

anyway, you are obviously questioning this, but WAIT I have PROOF man I AM the best olaf in the WORLD!!! (in gold 4)

https://gyazo.com/b6c95456ed5fb2df2adf264b339b0b4c
there you can see how op this is man, all you need

Matchups

Olaf is the best champion if you can land your axes nobody can 1v1 you earlygame man.. that passive + axes + true damage + attack speed buff SO OP

When should u pick BROLAF

Ideally you know, gotta get some engage champs in your team but you can be the engager too dude, just build that speed buff item towards champs, pop your ult too and everyone will **** their pants. ur team will not be able to catch up to you so if the enemy is good you will die and your team will flame you, but that only happens in platinum or higher, so if you are gold like me this is AMAZING dude for real look at those KDAs it's so op

ok so like, literally ALWAYS build the jungle item that gives more hp even tho it got nerfed, ur other items will give u health so it has VALUE man....... and besides if u build damage u wont live long so in the end u will do less dmg, logic

build black cleaver after jungle item, so op, movement speed??????? 20% CDR?????? WTF AND 400 HEALTH AND MORE SO OP

Then i like to go titanic hydra cuz OP and i am always fed but if u are a feeding **** u just have to build tanky. just look at the enemy's damage and build accordingly

SO ENEMY TeAM : KATARINA MORGANA DRAVEN GAREN NOCTURNE
MAJORITY IS PHYSICAL DAMAGE SO ****ING BUILD MORE ARMOR THAN MR UNLESS KATA IS FED AS FUUUUK

BOOTS:
just choose between the armor boots or tenacity boots, easy man. remember, tenacity doesnt work against ****ups so yeah. if ur fed as FK and u dont need armor/mr/tenacity just go boots of swiftness for the banter

TLDR

HEALTH JUNGLE ITEM
BLACK CLEAVER
TANKY
WIN

tip numbro uno- LAND AXES
tip numbro two - PICK THEM UP
tip numbro DREI - build CORRECTLY
tip numbro quatro - get master level 4 AT LEAST and spam that **** when u are about to do something CRAZY (or die, just to disrespect)
tip numbro cinqo - PLAY HIM

i am obviously the best so u should listen to me

PEACE