Welcome to my guide of Nocturne Jungling Despite of the most guides made it, I create a one based on AD and Life Steal. I think is a great build for a Nocturne because can do a great damage to enemys and recover his life quickly.
This build is made to specially jungle and gank in early game, to gank and fighting against more than 2 champions in mid game, and being OverPower on Late Game.
I hope you will like to kill enemys in two hits.

I selected this runes for Nocturne Jungling.
The Marks are selected to do great damage and not to be so slow on attacking, so thats why I choose 3 runes of attack speed and 6 of Armor Penetration.
In the place of Seals, I choose the runes of Armor cause you need to resist great damage of Neutral Monsters on Early Game. Is better to choose Armor and not Armor X Level because at Early Game you need to resist more than Late Game.
I selected 9 Glyph of Magic Resistance X Level beacuse grants you a better defence during the whole game against AP champions. Its better to chose X Level and not instantly beacuse you need to resist more damage of AP champion the whole game.
The Quintessence are balanced on Armor Penetration and Attack Speed. The reason is beacuse, despite you do great damage, without quick attacks, you will recieved great damage from Neutral Monster at early game, so I choose 2 of Armor Penetration and 1 of Attack Speed.

The Masteries are made it to do great damage and have the basic resistance of incoming damage. I think is better if you search for a Nocturne with great Damage and less Resistance. But if you want to resist more, better change the masteries.

This items are selected to obviusly do great damage. We start with the basic Amor Item (Cloth Armor) and 5 Potions, so you can resist incoming damage and heal yourself while you are fighting with low health.
Once you buy Madred's Razor, you can easly control all the jungle cause you can kill Blue and Red without problems. I recomend you to buy the Wriggle's Lantern because you have a ward free that gives you better control of some part of the map, and brings you LifeSteal, Armor and Attack Damage.
You can selected to buy first the boots or the BloodThirster, depending of how are you doing. Remember that you have to buy boots because its probably that the enemy will escape for having more movement speed than you.
Once you bought the BT, you are officially starting your mid game play. With the help of the BT, the Boots and the Wriggle's Lantern, you can start to gank the whole time, and when you buy the Infinity Edge, you can start to kill the Dragon ALONE.
Why starting with AD and Criticals Strike items? Well, thats an easy answer. You have a power that you are growing up since low lvl, that one is the Shroud of Darkness. With this power you have balanced your Damage and your Attack Speed.
Once you bought the BT and the IE, you need to start having Attack Speed and Critical Strike Chance, and for me, there is no better item than the Phantom Dancer.
While you have the 2 BT, the 2 Phantom Dancer, and the IE, you are officially OP, but for better damage, I recomend you to buy the Last Whysper.

The first skill you have to upgrade is the Duskbringer cause grants you more Attack Damage, Movement Speed and damage the enemys too. This skill have to be upgraded when you can (unless you can upgrade Paranoia). Once you can't upgrade this skill for any reason, I recomend you to upgrade the Shroud of Darkness cause grants you more Attack Speed and what you need is basically this to balance your AD. And then, when you finish upgrading all the others skills and you can't upgrade Paranoia, you upgrade Unspeakable Horror, cause grants you more damage and makes flee for more time the enemy.
The secuence is made it that you can jungle and gank easly. First and more important is the Duskbringer, cause is very usefull at the time of ganking. Then there is the Shroud of Darkness, a spell that brings you Attack Speed passively and blocks an enemy ability. This power is very usefull to jungle with my guide, cause you have more Attack Speed.
At level 4, is recomended to upgrade the Unspeakable Horror, because allows you to gank more easly the enemy. I recomend you to only upgrade this power when you don't have any other to select, cause this one is only upgraded at low level for the fear, nothing more.

If you are level 30, the jungling Nocturne shouldn't be a problem.
I recomend you to start at Blue, cause the Mana Regeneration and the CR is very usefull for Nocturne. I prefer that someone helps me at killing Blue cause makes you more easly the entrance to the Jungle, and for simplyfing your fight with this Monster, use the Smite to take it down more quickly.
Once you kill the Blue, you need to kill the wolves, because they are the nearest Neutral Monster to you. And then, you continue to the other side of the Jungle, where it's starts at the Wraiths, who for me are the weakest Neutral Monsters of all. And then you go to the Golems, and skips the Red.
Then you repeat this secuence until you can buy the Madred's or the Lantern. Then, go easly throught the Blue and Red cause you will kill them very fast.
After having your BloodThirster, you can go and kill alone the Dragon one (I recomend you to have the Blue and Red buff). And if you are not sure, buy the Infinity Edge because with that, the Dragon will die surely, but be carefully of being Counter-Jungle or Ganked. So do it when you are sure that no one will gank you.