Don't play orc. Orcs, unless they are very skilled/knowledgable, are pretty easy to destroy.

Rangers (especially rager rangers) need to know a lot less about item/gear knowledge. You also don't need/can't have preps. You also have pathfinding which means bye bye sleeping to regen movement.

I always recommend ranger first for beginners, basically due to pathfinding. Much easier to explore and learn your way if you don't have to stop for five minutes, every ten minutes, just to get your moves back. With pathfinding you won't need to, unless your running superman laps around Thera or something.

EDIT TO ADD: We all know its rough in the beginning. We have all been there. Trust us when we say stick it out because its worth it or don't. Up to you.