Making gold is something that you'll have to put some effort into, you won't just go play like normal, and BAM all of a sudden you're raking in tons or gold every day. You have to know where to sell, and what to sell. And it's really easy to find out.
The Auction House is the place to sell for big profits. You can sell materials that you pick up like cloth, and green items that you pick up while you're out grinding. Also when you pick your two professions you can sell those materials there as well.
If you're just starting you should go with Mining & Skinning or Maybe herbalism as your two professions. They're gathering professions, and will make you the most money. Although if you chose one gathering, and one crafting, you can also make good money that way too, but I always recommend these two starting out.
Vendors will never give you full value for your items, and if it's something that can be used by other players, you should always sell it in the Auction House. First go to the Auction House, and do a search for the item that you're wanting to list, then list yours just under what other people are selling it for. But be careful, often times other players don't know what an item is worth.
For example if it's your first time in the AH, and you're listing an item for a level 5 player, it won't be worth more than 30 silver in most cases. The reason being that at level 5, most players won't have 1g for new gloves.
But you can also buy items from vendors and list them in the auction houses as well. At low levels, one of my favorite places to buy these is from the fish vendors, they have recipes that you can buy for just 3 silver, and sell them in the ah for 78 silver, it's an awesome return on investment, and they generally sell within 24 hours.
To download my Free Gold Guide visit outlawgoldguide.com also receive my Free Tips Newsletter today