So one of the new companions is a rogue. I want to use him but to be honest I have no idea how to run one. I tried once but it was a complete failure. I could sneak and get in a good first attack but it wouldn't kill and it would always leave me surrounded by enemies that just take be out quickly due to light armor. Obviously lock-picking and disarming traps is pointless in this game, so I just kind of left the rogue alone.

But now I want to try this new guy, but need some help as to how to use him effectively.

Thanks.