There is a very nice article on wow-insider on Hunter DPS.
A lot of people will tell you that a Hunter is an overly easy class: sic your pet, turn on Auto Shot, and you’re done. While having a built-in tank that you can even heal a bit gives you a pretty strong advantage when going it alone, I’d have to say they oversimplify things a bit.
I have to agree with this. Especially instance runs were a challenge at 1st with managing your pet, keep threat low and setting traps. I’ve gotten a bit better at it now, but it takes some practise ;).