Enchanting, one of the many tradeskills available in World of Warcraft, may also be one of the best, depending on your current situation. Enchanting gives you the ability to turn practically useless items into at least a skill gain if not a valuable product. This is why I personally call it one of the more profitable professions, despite its similarities to money-grinders like blacksmithing and tinkering.

First of all, enchanting is easy to pick up on any new character you may start; just use the useless magical/green items you pick up for disenchanting and you should be gaining skill quite easily. Often times, especially if you supply the new character with money from a higher level, you will be able to reach the maximum skill level for disenchanting by the time you have the cash to start really boosting your enchanting skill.

Secondly, enchanting can make those very valuable materials that sell for quite a bit on the auction house. Do you ever find a worthless blue or high level green item? Just disenchant that useless item and sell the resulting shard or dust. This is a very reliable method of turning useless junk in just seconds into a profitable material you can sell on the auction house.

One thing to know, however, is that once it reaches a certain level your profits start coming from enchanting items, rather than disenchanting them. Before you enter the enchanting profession do your research and make sure your server possesses a good market. Some servers actually have an over-abundance of enchanters, so I would either recommend finding a different profession or joining a guild willing to finance your enchanting skills.

Guilds love enchanters. Practically any guild will be lusting after having at least one if not more guild-specialized enchanters. As a guild enchanter you will get all the rare recipes dropping from dungeons and the like. Just make sure the guild you are interested in doesn't already have two or three enchanters.

Finally, even if you can't manage to get into a sweet-spot of enchanting within a particular guild, you can always just do 5-10 man dungeon runs and offer to disenchant everything nobody needs. Most groups want to roll on the resulting materials, but even then you have a good chance of getting at least something in the way of a profit in this manner.

Good luck prospective enchanters! May you find many magical items to disenchant or keep in your wanderings.