We've got some great threads going on making money. They should help you out.
Check this one, that's currently in General: http://wow.allakhazam.com/forum.html?forum=21&mid=128124262696812487&page=1
There are also some threads here in tradeskills, like the one about using the AH to make money: http://wow.allakhazam.com/forum.html?forum=69&mid=1276043502285963801&page=1
In short, take a couple gathering professions to start, like mining and skinning. Sell everything on the AH and avoid buying armor or weapons on the AH while leveling. Enchanting should be used as a money maker by disenchanting, not by enchanting.
Start with gathering professions. Learn to make money. After you are comfortable with your ability to make money, feel free to explore the crafting professions.