I'm not sure how much I've covered in my previous posts, so I figured I would do a recap of easy ways to make Gold in World of Warcraft.
1 - Beg for it. Swallow your pride, ignore people giving you advice on how to make money by taking up gathering/crafting professions, and spam the trade channel tirelessly with comments like "I'm level 6, and need 10 gold 4 new armorz" "Can anyone give me money for my epic ride? I pay back next week, swear!"
It will work, eventually. Someone will get tired of your whining and give you a few gold to shut you up.
(The above is sarcasm, just felt like listing it)
2 - Take up a gathering profession. Herbalism, Skinning, and Mining will all give you a good gold return for the few seconds it takes to gather a metal/herb node or skin a beast.
3 - Take up a crafting profession. Leatherworking, Tailoring, Blacksmithing, Enchanting, Jewelcrafting, Inscription, and even Engineering can produce items to make you money. Inscription is the newest one, and as such, if you log in every 20+ hours to do your Minor Inscription Research, you can make a lot of money off the minor glyphs pretty early on. The other professions usually don't start making money until later levels.
4 - If you've downloaded Auctioneer, you can use Bottomscanner or whatever it's called to gather prices of all the items in the AH. Keep doing this regularly, and your computer will build up a database of prices for the items. This will allow you to see when someone posts an item below the average price, which you can buy and resell for a profit. (Not my favorite way to make gold, but to each his own)
5 - Whenever you pass by a tradeskill supplies vendor, peruse their stock to see if they have recipes for sale. For example, Rikqiz in Booty Bay sells the Shadowskin Gloves recipe for 35 silver, but you can easily sell it for 5-8 gold in the Auction House. Some recipes sell very well, others bomb. You kinda have to develop a sense for them.
6 - Become a Neutral Auction House (NAH) supplier. There are certain recipes that are Horde or Alliance ONLY, buyable only by someone of that faction. But, if you buy them, and bring them to the NAH, you can post them for much, much more than they're worth. The Pattern: Red Whelp Gloves is sold in the Wetlands by Wenna Silkbeard for 14 silver and 40 copper. If you left an Alliance alt there, and logged in every few hours, you could build up a bunch of the recipes for only a few gold. But, you can sell each of those recipes for at least 6-10 gold on the NAH, since Horde players can't normally get them. Check here for a full list. http://www.wowwiki.com/Faction_exclusive_recipes
The Recipe: Tasty Lion Steak can be bought on Alliance auction houses for 1-2 gold, since it's quest reward, and not everyone decided to take up cooking. You could probably get at least 20-30 gold for it on the NAH.
Formula: Enchant Chest - Lesser Mana is sold for 4 silver in the Drag in Orgrimmar, and I'm guessing you could get 8-10 gold for it.
There's also recipes that you only have to go a little ways into a profession to get, like Plans: Heavy Copper Longsword & Plans: Ironforge Breastplate, a level 5 alliance player can powerlevel his blacksmithing to about 50, make the necessary items, complete the quests, and be able to sell the Ironforge plans for at least 100g.
I'm conjecturing on some of these items, because I stopped posting on the neutral auction house a long time ago. I discovered a better way, shown below
7 - Become a smuggler. Know someone who plays Warcraft, and isn't on your server already? Congrats, they just became your new best friend. You can work out an arrangement, where they create a toon on the opposite faction, you buy a worthless item from them for a few gold, and they go buy the recipes/pets you want. They bring them back to the NAH, post them for 1 copper bid/buyout, and congrats, you have a recipe/pet that you didn't have to spend a ton of gold on. If they're really accomodating, they can get multiples, and you can bring them back to your AH to make a killing.
The 12 cooking recipes (except the Curiously Tasty Omelet) sold by Kendor Kabonka in Old Town in Stormwind, on the second story landing above the cooking trainer can be bought for about 1 gold for the set. Get them over to Horde side, and you can sell them for 6-8-10-15-20-30 gold EACH, depending on what people will pay for them. Go high, and work your way down.
The Savory Deviate Delight and the lesser known Elixir of Giant Growth recipes are Barrens only drops, which means Horde toons are usually the only characters to get them, as Allies don't spend too much time grinding those mobs. You can probably get the Giant Growth recipe for 2-10 gold, and the Savory recipe for 20-50 gold. Get them to Ally side (with your friend helping you), and the Giant Growth can sell for up to 100g, and the Savory will sell for 250-300g.
If you do a little of each of the above steps (except #1), you'll soon have enough to provide you with enough gold to do whatever you want. If you don't suffer from altoholism like me, your main will have more gold than they know what to do with.