I second the Vit Caster Ritualist advice. I consider myself a new player as well and after switching between about a dozen builds so far, I’ve found the build to be the most noob-friendly. It’s got the damage, AOE and sustain without being reliant on a specific set of gear (just stack on +% vit/bleed and resistances then OA/DA later!)
I suggest looking at the following guides and then decide by yourself how you’d like to make tweaks to suit your playstyle:
Leveling is pretty straightforward - pick Shaman first and max Devouring Swarm as your main, semi-AOE leveling skill (yep, it can be a bit boring using the same skill over and over for a good while but it’s really good), then later on get Necro and max Ravenous as your AOE, then the other skills using the guides above as your reference on what seems to be good.