Hi guys, welcome to my First build here.
Amumu is one of my main champions, i usually jungle with him, what i very like of amumu, is that he can totally turn around a game if its well played.
Hope you guys enjoy my build, give me your comments and everything, i will edit this guide and everyithing. Thanks

This is my main thing, i dont think amumu is very good in lane, he is more succesfull in jungle, while he gets assists and kills in early game, late game he's a BEAST.
Lets start with my jungling route.
RANKED GAMES
Please note that, in ranked games, you should take less time jungling, and gank more, im not saying that in Normal Games, you will relax, dont gank and do the jungle slower. You just have more pressure, and u have to gank and get your team early kills.
I ALWAYS start with:
&

1.- I Ask my team to DMG in wolves and LEASH in Blue Golem. (ranked games, in normal i just ]ask for leash at blue)

2.- After im done with Wolves<Blue golem, i have lvl 2, and got , i go to Wraiths, and take them easily.

3.- Then i move in to Double golems, and care here, if your DMG and Leash were good, you'll have no problem with that, if that wasnt, you'll end with low hp, in that case, skip step 4. (DONT USE Smite HERE, ONLY IF YOU'RE TOO LOW HP)

4.- If you had nice hp, and your Smite, move in to Red Lizard, and take him down with your smite.

5 If you skipped step 4, just go to wraiths or wolves, and wait until they respawn, ust do that until you have lvl 4, take your Bandage Toss and start the beast - ganking.

Ganking is the most important thing of jungling, you should do it the whole game, and here is some usefull tips:

1.- If your enemy is next to the brush, ask the lane to CC him, DONT use your Bandage Toss yet, wait until the cc goes off, and throw it.

2.- If the enemy is away from the brush, use your Bandage Toss, but AIM! you dont want to miss that, or the enemy will see you, a bad Bandage can even kill you.

3.- Have clear memory of the wards, if you know its warded, go on their jungle, and go for the back of their lanes.

4.- Dont be cocky, your amumu, not god... Dont tower dive if you dont know very well this champions rates.

A Perfect timing is Very usefull, so i have some tips for you guys:

Ancient Golem Spawn time: 300 Seconds = 5 Minutes
Lizard Elder Spawn time: 300 Seconds = 5 Minutes
Dragon Spawn time: 360 Seconds = 6 Minutes
Baron Spawn time: 420 Seconds = 7 Minutes
Sight Ward Spawn time: 180 Seconds = 3 Minutes
Inhibitor Spawn time: 300 Seconds = 5 Minutes
Flash Spawn time: 210 Seconds (with no Mastermind ) = 3 1/2 Minutes

Personally, i use a very nice Android Application, its called Jungle timer and just keeps the respawn time of jungle monsters. Here's the link: JUNGLE TIMER FREE