I couldn't get off it. I spent 13 hours on the first day.
You start off by picking you race. The 8 races are broken up into two groups, The Alliance and The Horde. Each with its own unique races. After you pick you race you pick you class. They're about 7 or 8 classes to choose from. Each containing its own abilities. After you pick your class you begin customizing your character. You can customize your har style, hair color and many more features of your character.
World of Warcraft is split up into Realms, instead of craming everybody into one world. There is 4 Different types of Realms. Normal, PvP, RPG, and RPGPvP. Nromal is your're normal Warcraft Realm. PvP is a Realm were players can attack you without asking your permission. RPG is a Realm were players act like they're their characters. That means talking like their characters or doing things their characters do. RPGPvP combine PvP and RPG Realms together.
After you pick your realm you enter the World of Warcraft. There is no tutorial but I reccomend that you do the beggining quest of your race. There is no boundries so you may travel the beautiful, vast world. You can make your own items. Oh, I forget to tell you about professions. In World of Warcraft, there are things called professions. Professions are pretty much like skills. You can only learn two professions at any one time. You can use your profession to make items and sell them at stores, or with people. There is a combat areana. The PvP arean lets you fight against the other faction. Which would be the Hrode or Alliance. You can also make a guild and have a guild war at the arena. Sometimes there is problems with the arena and you cant fight.
World of Warcraft offers many, many features. I reccomend that you pick this up ASAP. You will be a addictied to the World of Warcraft.