Soon, you can mount up!

In this part of the World of Warcraft Horde leveling guide we are going to spend time in two different zones to level through most of level 37. Exactly how much depends on drop rates and how much you grind. Once done this section we will move on to finish level 37 and all of 38 in the next section.

The best place to grind at this level in Thousand Needles is the pits in
the south of the zone. You can find many insect creatures there to kill,
although the drops are never very good.

Read more at Ten Ton Hammer's WoW site.