My first guide and its written for a friend.
Ahhhhhh! PUT AWAY YOUR KNIVES!!! Please don't slam me for what I do with builds and stuff.

You got a better build/guide than mine? Write your own!

Basically when I play Olaf, I go crazy and run into people and enemy teams. This is because I like putting Olaf in a strong initiator role, being able to absorb damage and stuns so that the rest of my team can get in range and focus on the right target... Rather than the enemy tank because they are the closest target they can reach.

Olaf simply put: Play him as initiator!
1) Aggravate the enemy team while they are out of position or are waiting for supporting creep wave.
2) Absorb/negate stuns and slows to allow your own team to get into position.
3) Deal enough instant burst damage to draw enemy's attention.
4) (Most important) Get out alive.

Olaf falls into the same play category as Alistar(tank) and Renekton.

The "angry trio" (as I like to call them) are unlike Rammus, Ammumu, or Shen (who are better tanks by any measurement) in the fact that they are invulnerable to immediate CC and cannot get completely shut down after they initiate.

Basically, tanks won't draw enough attention to themselves because they aren't able to deal a significant amount of damage AFTER they dive in. That and most teams with more than one CC will not likely use both on a tank that is already being suppressed, leaving one or more CCs to shut down your carry.

Flat AD - reds
Hp/Lv - yellows
Flat MR - Blues
ArPen - Quints

AD and HP for the skills, MR for the lack of, and ArPen for the tanks.

13 - 17 - 0

Tagging Crt and Exhaust, AS, ArPen, and Minion Damage.
Then MR, AR, 2dodge, Minion Def, DamageDef, and Flat HP.

In no particular order.

Crown
Cleanse Belt
Ninja Tabi
Thornmail
Banshee
FoN

Q --> E --> E --> W --> E --> R --> E --> W --> Q --> W --> W --> R

(Running this off the top of my head... Might be wrong...)

Exhaust and Flash

Just for a note: Throwing the axe as close as possible had a range about his normal attack and quite a big splash radius, but has an automatic pick up because of the size of the graphic and the handle of the axe.

Crown --> Flash --> E --> Close range Q --> W --> Close range Q
Put in a R wherever you think they are gonna CC you hard or tower diving.

I really don't know how people got graphics on their guides... Imma leave it at this for a first.