I just started playing world of warcraft and I don't know if it's better for me to duel wield or to use a 2h. I am playing a fury warrior and right now my dps is 43.3/26.6 when i duel wield and 50.7 when i use a two handed weapon. When calculating DPS do I add both the right hand and left hand together to get a total DPS (43.3+26.6= 69.9)?

If you want to do huge amounts of damage in a short time but don't want to tank, fury warriors are unsurpassed in doing sustained melee DPS. Once you hit 60, you can get Titans Grip, which allows you to dual weild 2 handers. At that point you will be doing alot of DPS but it will be at once. For example: say you have 2 weapons with similar attack speeds. If you do the same with 2 handers, you will be doing more damage total, but slightly less DPS. Because the 2 handers are always slower, you will be hitting for a huge amount of damage at one time rather than slightly less damage at a faster rate.

1h dual wielding is surpassing titan's grip right now. I've always like arms better, but that's just my preference. It doesn't really matter how much damage you're doing at low levels, as arms and fury seem to do just as well as each other. If you don't do dungeons at all go Prot, unless you're interested in tanking. You will hardly ever have to stop or eat and will be able to take on 3-4 mobs at once.