This Build/Guide is for a Jungle/Ganker Nocturne.

AT LEVEL 1:
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EXCLUDES CHARACTER'S STARTING STATS
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28 Armor Pennetration (6 Armor Penn. with "Sunder" Mastery)
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34% Attack Speed (10% Shroud Of Darkness' Passive + 4% "Alacrity" Mastery)
+
13 Armor (Necessary For Jungling Properly).

THE FIRST GANK IS EXTREMELY IMPORTANT:

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Following the skills and overall flow of this character, it seems as though this character is build around ganks, but can also be a very defensive ganker with his "Shroud Of Darkness" ability.
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-With That Said, Drag your Entire(5 members) to GANK your enemy jungler at his/her BLUE BUFF.
(Even Without an Enemy Jungler, I would advise you to still take the enemy blue with your team)
*If you kill the enemy jungler, make sure the enemy team back off entirely, or die.
1: Make Sure To Take Enemy Blue with Remaining Team Members, using SMITE TO TAKE THE BUFF
2: Then head to DOUBLE GOLEMS.
<<If In Fact Your Team Loses The Team Fight With You Still Alive With Half Health, Use A Potion And Head To Your DOUBLE GOLEMS.>>
3: Head To WOLF PACK
4: SMITE Blue Wraith, kill rest.
5: Head To Town, pick up Boots and 5 Health Pots.
6: Kill RED BUFF (If At Anytime Between these steps you are able to gank, please do)
<<Usually, I GANK Middle Whem I'm Around Level 4-5, Even If Middle Is Full Health, You keep The Pressure Off Of The Middle Teammate, Or Atleast Damage The Enemy Mid-Laner With a "DuskBringer.">>
7: Get Your Own BLUE BUFF, then GANK BOT LANE. ( Don't Spend To Much Time Bottom of The Map, Top lane By Now Has Been Alone Long Enough and Probably Will Get GANKED BY ENEMY JUNGLER)
8: Work Your Way Around The Jungle Watching All Lane, REMEMBER TO WARD ENTIRE MAP AS MUCH AS POSSIBLE, VISION IS THE KEY TO GANKING SUCCESS, since Nocturne's ULTIMATE WITH THROUGH VISIBLE TARGETS, NO VISION = NO GANK.

MAKE SURE TO AIM YOUR AUTO-ATTACKS SO YOUR UMBRA BLADES(AREA OF EFFECT) HITS THE MOST CREEP POSSIBLE.
*EXAMPLE:

***WHEN I SWING AROUND TO GET DOUBLE GOLEMS, I USUALLY USE MY "Q" BEFORE I CUT THE CORNER, I GO STRAIGHT FOR THE SECOND GOLEM, THE ONE THAT IS FURTHER AWAY FROM ME.
***IF I ATTACK THE FIRST GOLEM I SEE, MY UMBRA BLADES ONLY HITS ONE TARGET.