by Eldacar » 27 Jan 2011, 19:39
If you are just starting out it's best to just get the original World of Warcraft, unless you want to play a Blood Elf or Draenei. The original World of Warcraft will allow you to play until you get to level 60 (as a Human, Orc, Troll, Dwarf, Night Elf, Gnome, Tauren or Forsaken) and you will no longer be able to level, instead you will earn gold, in the game, as you turn in quests. World of Warcraft works on it's own, you do not need another game to be able to play it.
The Burning Crusade expansion gives you two new races to choose from (the Draenei and the Blood Elves) as well as allows you to level past 60, taking you to level 70. Unless you have Wrath of the Lich King you will not be able to level past 70, instead you will earn gold, as you turn in quests. The Burning Crusade expansion will only work if you have World of Warcraft installed on your computer.
Wrath of the Lich King can only be installed if you have both World of Warcraft and The Burning Crusade installed on your computer. It does not add any new races to play, but instead adds a new class called Death Knight that can only be used if you have a character that is level 55 or over on your account. It also brings new places to quest and will allow you to level past 70, taking you to 80. You will earn gold instead of passing 80.
At the time their is no way to play World of Warcraft (either on it's own or with any of the expansions) while not online. You cannot play on your own, I'm afraid. You can ignore people and try to do every quest you receive by yourself, but some parts of the game are too difficult for one person to do and you'll need to group up with others.