New to assassin

[Feonn]

I've never played any assassin before, so I'd like to know wether there is a PvM Lightning Trapsin build, but I would like to know wether it's possible or not.
I looked around in the stickies and such, but I only could find a PvP trapper guide.
I like using not too many different skills, so I thought pure lightning trapsin would be nice?
Or is there any other nice assassin build?

[skoolbus]

There are plenty of assassin builds and a lightning trapper is certainly one of them. Your main skill will be lightning sentry. I'd max that and two of the synergies, then points in BoS and other 1 point wonders as you see fit.