Movements to jungle fast ( Use smiteeee)
1.- Wolfs, use smite with the big wolf.
2.- 1 ghost and go to heal base and buy 4 potions. ( If you go fast without runes u can kill 2 ghost before die, but better kill one and go to heal)
3.- the last ghosts
4.- 2 Golems
5.- Wolfs again or if you have runes try the monster of mana
6.- Golem of mana and buy boots, when you fight golem you have to use one potion when fight starts and use the smite of course.

This movements changes when you are necessary in somewhere to protect towers but it's the best movements if you dont have runes. If you have maybe you can jungle more fast and go to dragon at lvl 6. I try this build many times at my lvl 25 and always have fun with nice scores, 17-7 many times or something like this, nut never negative scores. I publish that build, the one, because I try playing and its so awesome.

Now still killing in the jungle and try to kill heros coming from his back, use exhaust.
If you have lucky and you have good team play, with this strategy you will be unstoppable.

You can read a lot of jungle builds but this is the one. I give you even the movements at the beginning. Try and have fun with olaf. If you try and you see that its awesome, please vote.