Not a HORRIBLE build, but both are pretty flawed.

The first one is a glass cannon build- dish out punishment, can't take any in return. While it's not necessarily BAD, it's not GOOD either. Nocturne should be a hard-hitter while being able to withstand enough punishment to actually be useful in teamfights.

The second one sorta focuses on damage, but is primarily just a tank. Problem with THAT is that he has no attack speed at all. Something's definitely wrong when you have a DPS champ with little to no bonus attack speed.

While both... well, can work, neither build really utilizes Nocturne's real potential.

Not bad for your first guide however just wanna point out a few things
i believe you should max out duskbringer and shroud of darkness and leave 1 skill point on unspeakable horror. Reasons being dusk is so easy to get early kills with since it gives you quite a vast increase in ad, and the passive speed from shroud of darkness is quite amazing, so amazing that i dont even build AS early game from boots i go straight into infedge.
I also dont like having the idea of clarity for a melee dps, well i beleive there are more useful spells than clarity especially at late game when you really do not need clarity


but hey noc got nerfed some things may have changed

Good build.. But i think you shouldnt focus on boots 100%... you should get some early AD for kills, then focus on boots... and idk if its just me but in your intro I see alot of "��" idk what it is but u should fix it lol... just my 2 cents...