WoW Mining Guide - 9 Top Tips
One of the worst parts about leveling mining is when you are getting out of the Tin phase before the Iron phase. It's hard to find a large quantity of Tin, and it becomes tedious farming it. The nodes respawn quickly and you can level up your mining in less than an hour if you're the only one in the cave. (You can also sell the Incendicite Ore on the Auction House to make a little extra gold in the process - get the quest from Pilot Longbeard in The Miltary Ward in Ironforge.)