Something that will help you :)AA = Auto-attack (Basic Attacks)
AD = Attack Damage
AP = Ability Power
AS = Attack Speed
AoE = Area of Effect
CC = Crowd Control (Stun, fear, slow, snare, etc)
CDR = Cooldown Reduction
DoT = Damage over Time
ELO = Elo rating (Rating system designed by Arpad Elo that is now used in gaming communities worldwide)
FB = First Blood
HP = Health
LS = Life Steal
MD = Magic Damage
MP = Mana
MR = Magic Resistance
MS = Movement Speed
OOM = Out of Mana
SV = Spell Vamp
DPS = Damage Per Second; also: Strong Auto-attacker
MDPS = Magical Damage Per Second; also:Strong spells; casters
MP5 = Mana Regeneration per 5 seconds
HP5 = Health Regeneration per 5 seconds
ArPen = Armor Penetration
MPen = Magic Penetration

Olaf is a very strong melee fighter ,i prefer a line olaf no jungle but maybe solo he is very very strong 1 vs 1 especially when he in Ulti, wtih this build full you will be stronger then tryndamere full build and i'm seriuos when your W is active you are in 80% lifesteal and every attack you gain 100-230 HP per attack and when you low your passive active and the attack are swiftness and you undeadable.Always focus on last hits farming its very important,usally when you start fight vs man start with the E Because when its only 4Sec CD so you can use it again in fught and uts 340x2 true damage its very stronge.So guys no need to talk so much go to the shop and push unlock on Olaf !!