What team do you have? Do you focus PvE or PvP? Bout?
If you have a tank, healer/dps team, you could run heroics until you gather gear from that. It's hard in the start, but it goes a lot faster when u learn the diffrent heroics with ur team..I would recommend to start farming Culling of Stratholme, Gundrak and maybe Nexus. Of course, you should do others to, but these are the one's i would do first in the day if i newly dinged.

Gear recommendation would be a lot easier, if you told me what team you have, and if you mainly go for PvE/PvP or bout.