Some quick pointers to help you level a little faster.
1 - If leveling is the most important priority, then you can skip the professions except First Aid. It reduces down time between battles and only needs cloth to make it useful.
2 - Auto Run can help you multitask. You can type or manage your inventory while auto running. Just watch out for obstacles that might get in the way.
3 - Make sure you have plenty of ammo before you leave town. Also make sure that your equipment is fully repaired. Nothing like going on a far off quest to see your main weapon in need of repair half way through the quest or that you don't have enough arrows to make it through the next mob.
4 - If your inventory is full, don't return to town. Destroy some cheap items and keep moving forward.
Those should speed up your wow leveling. The World of Warcraft Power Leveling Guide for Alliance characters has some other excellent tips as well as some class specific tips for faster leveling.
