[Champion] Olaf

• Summoner spells:
Ghost/Smite
These are my standard jungler spells, i don't think i'd ever swap them with any other.

So why Ghost you ask?
I will skip ghost's "standard" advantages that apply to every champ and explain why it is important for a jungler. Usually when you grab your first lizard (which happens most of the time at lvl 4) you want to look around the map and check for ganks. If you are ganking you obviously want to catch up to enemy so you can hit them with lizard-buffed autoattack, which combined with Q's slow will make enemies move like snails.
Ghost also saves ur ass when enemies counterjungle.

What's so special about Smite?
Well first of all - it does make your jungling faster. It allows you to grab blue lvl 1 with no problem. And the most important part - it prevents buff steals. When you hit 18 level it gives you ~1k damage nuke vs jungle creeps (deals ~700 damage to baron). It is just vital to last hit that Dragon/Baron. If 2 competent teams meet both having a jungler - the one without smite will lose.

• Skill order:
W Q Q/W E E R and then R>E>Q>W.
This is the skill order i use but with Olaf there's so many options - you can start with Q and kill golem np anyway, you can delay your E if you feel like the game will be very peaceful farm-fest. Literally every Olaf's skill is worth leveling.
So why do i use said skilling order?
Well, first 2 lvls are no-brainer, W gives u huge damage boost and allows to heal while jungling, Q allows for very quick clearing of camps with golem. At lvl 3 main focus is still clearing creeps as fast as possible so I take either W or Q - usually Q because it means better slow for gank.
Then from lvl 4 onwards i get E because i want to have lvl 5 E at lvl 9 - this allows Olaf to become serious threat to enemy squishy supports/carries - if you ever get near them you smash them with huge 360 dmg hit.
Then i grab Q over W just because it allows you to get better slows, however taking W over Q will result in better auto-attack DPS and staying power.

• Items:
Start with cloth armor + 5 hp pots (standard opening for most junglers). You want to buy boots before first gank. From then on i upgrade the cloth armor to hog and buy the following:
- mercury threads (Olaf actually doesn't need mercs that much b/c of his ult, though they are still useful for +mres and for times when ur ult is on cd, i dislike zerkers very much, especially on Olaf who has AS from his passive)
- randuins - upgrade your first hog
- negatron (if they have fed caster or many casters might need 2 negatrons)
- chainmail (this is when games usually end)
- if the game drags on you can upgrade your negatrons (on Olaf i usually prefer FoN over Banshees because i need ms so often, however if you don't know which one to choose - Banshees is awesome vs burst and gives you HP to help your EHP, FoN is very good vs poke fights).
- during the game always buy wards. Have 300 gold? Buy 3 wards! Jungler is the one with the best map control so you can ward ezpz, though don't overdo it - you also need to be tanky so you need items.

Now, my item build is very different from build that Lilballz uses (IIRC he goes randuins -> (quite often frozen mallet) -> atma's), however it kinda didn't suit me so i opted for a full-tank Olaf.

Also sometimes i use my "standard crisis jungle tank build" which is:
- as many hogs as you can till 13. minutes (idea shamelessly stolen from discussions in our thread )
- 2-3 negatrons
The idea of this one is to have as many "small pieces" of tank-stats to have cheap and efficent tanking but at the cost of utility.

• Masteries
I use my standard jungler masteries - 1/14/15.
Offensive Tree: improved Smite (aka Plentiful Bounty 1/1)
Defensive Tree: Strength Of Spirit 3/3, Harden Skin 3/3, Defensive Mastery 2/2 as well as all the requirements.
Utility Tree: Good Hands 3/3, Improved Ghost (aka Haste 1/1), Awareness 4/4, Meditation 2/3, Utility Mastery 2/2, Quickness 3/3

• Jungling order:
I start with blue buff (big golem), hit once and before 2. hit use W (so i can heal 5 more hp lol) and use health pot after u get hit by golem. Use W when it's up and try to time smite so that u deal last hit with it, iirc you should deal ~540 damage to golem, because it has negative magic res (this is important part if you are not sure if enemy jungler didn't ward your blue, even though if he did and your team didn't cover you you're dead probably )
Then i move to wolves, wraiths (ask mid to not steal XP if he is nearby, this one is important because if he steals XP - you won't hit lvl 4 at lizard), then big golems (smite them), then recall and buy boots + potions and go kill lizard (recalling before lizard is important because this way you have lizard longer compared to recalling after lizard. Not recalling at all makes it impossible to gank).

• Ganking:
Now you have cleared you jungle, hit lvl 4 and it's time to look at the minimap. Check out the lanes - if either lane is pushed out towards your tower (so if you go from the river side you "take enemies from behind") - that's your prey.
It is important to pay attention to enemy summoner spells before ganking. If you gank someone soloing top and he has ghost+flash - they will almost surely escape (unless they are hitting your tower at this moment). However if you have no better choice for ganks it may be still very good to just run in there and force them to use their summoners, this will surely help your ally.

Also when ganking top/bot - don't just rush in there if there's no need. You can sit in brush and see if enemy pushes further. If he does - you can use ghost and go in (preferably if he is near bush you may be able to hit him with Q for the slow). Once you hit them with lizard buff and your ally is competent/not nearly dead you are guaranteed to kill enemy.

Some important stuff about ganking:
It is NOT always the best idea to gank:
- If your allies pushed the lanes - it is a waste of time, you are better off farming jungle.
- If you are not sure if you or your lanemate won't die - don't gank (say if your ally has 100 hp vs lvl 6 nidalee with ghost/flash, she WILL get a kill on an ally if he tries to help you). If your ally is on low HP just let him back off and hold his lane.
- If your allies are doing just fine and enemy plays very safe - you're better off staying in jungle.

So what does the "perfect gank prey" look like?
Like that Ashe
Shamelessly stolen from the LoL tutorial thread

• Runes:
Ok so i'm still poor so i don't have dedicated jungler page. I use:
- ArPen reds
- Mp5/lvl yellows
- flat cdr blues
- hp or move speed quints.

I feel like ArPen is somewhat a waste for jungling but at the same time it sure does help with ganking.
Mp5s are there for mid and lategame when you will be giving blue to champs that need it more.
Flat cdrs are cool on Olaf because they - combined with randuins and blue buff allow for maximum E spam at lvl 9+.
For quints i feel like HP quints are "jack of all trades master of none" - you can use them for every champ, but they aren't the best pick for any champ.
MS quints are cool choice for Olaf since he kinda lacks a good way to get close to enemy compared to Udyr's ms boost from BEAR STANCE or mumu's bandage.

I'm almost sure that these aren't optimal runes but i don't know what to offer so feel free to tell me what runes would you use.

Well i think i've covered everything i need, if this guide needs something, feel free to post about it.

I'm open to criticism and suggestions so i await flames civil discussion and constructive criticism