The same co-worker that thought it would be a good idea to start this blog has picked up his "Wandering Paladin" again. You can read all of his adventures here. So, in conversations, I thought of a lot of the things I've learned throughout my time playing. This isn't a post on the Auctioneer add-on (although that's a great, easy way to help you make money through the AH), nor is it how to get the gold for a flying epic mount. It's just a few simple suggestions that will help you have some extra money and not have to beg in Iron Forge/Undercity for money for your new skills.
1) There are gathering professions and there are producing professions. To be simple and straight to the point, choose two gathering professions as you lvl your new toon. While producing professions can get you some "cool" armor or weapons or widgets, overall you'll lose money in the beginning. By choosing the gathering professions, you'll always have additional things to sell at the AH. Even the lowest stuff (copper bars (smelt all ore before AH'ing it), light leather and peacebloom) will always sell at the right price. So, choose either (A) Skinning and Mining or (B) Skinning and Herbalism. You can only have one type of tracking active at any given time, so Hebalism and Mining is kinda a tough combination.
2) Get yourself some bags so you don't have to go back to the bank or mailbox or Auction House every 5 minutes. Start out small and get what you can afford. Trust me, this will be the best investment you can make at lower levels.
3) Bring everything that's not gray to the Auction House. Somebody might be trying to skill up their cooking and need just one more clam meat. You never know.
Ultimately, you'll want to have enough money to purchase your mounts at 40, 60, and 70. Flying epic mount? Well... you're on your own. ;) At least until I get around to that post.