Right now I am doing dual wield + assassination

any suggestions for skills to use to do best?

or other weapon type suggestions.

im level 26 atm

The better question is, what do you want your end result to be?

For instance, one of the best routes to go for PvP is Shadow mixed with some assassination.
Personally I went full Assassination for full on dmg and sustain.

It depends what you're looking for
What you want to do
What role you want