A few questions about World of Warcraft!?

The first question im not quite sure of, so idk but i do know the other two. The expansion Burning Crusade has the ability to get you to 70, more items, flying mount wich allow you to go to instances that you need a flying mount to get to.The regular flying mounts have a 60% speed and are only availuable to lvl 70. There is also an epic flying mount wich goes 280% speed and is only for lvl 70s. THe Expansion also includes blood elf and dreinei. The Blood elf makes it so horde can be pally's. THe drienei makes it so alliance can be shammans. The expansion also includes new instances and the ability to go to outlands. The outlands is a new world that has lvl 60-70s and has better gear then non expansion gear. with the expansion there is new profession. The new profeesion is Jewel crafting. This allows you to make rings gems wich you put int some gear and other items. In my opinion the Burning crusade Expansion IS NOT A WASTE OF MONEY! Now i will move on to question 3. In my opinion my favorite race is human and cl is warrior becaause i like doing damage. It is up to you weather you want to be Horde or Alliance, and also up to you to choose what cl you want to be weather it is a pally(healer) or rogue (damage per second)(dps) or anything else. so i recomend that once you play you test each thing but good luck with your expirience in World Of Warcraft. :)