Nope, you can only have one trial at a time. If you have the payed account for regular World of Warcraft then you can download The Burning Crusade trial. If you have The Burning Crusade then you can download the Wrath of the Lich King trial.
World of Warcraft expansions must be paid for to use them.
No, there are no cheats available for World of Warcraft or any of its expansions.
Nearly every person who plays World of Warcraft will buy the expansions at sometime in their WoW career. They do this because you need the expansions to level higher and explore new content.
No, World of Warcraft is not on Steam. If you want to download it, got the the official World of Warcraft site to download it.
World of warcraft II does not exist. There have been several expansions to the game which include The burning Crusade, the Wrath of the Lich King, and Cataclysm. They are also releasing another expansion Mists of Pandaria, with an unknown launch date
World of Warcraft can be downloaded for free (free trial allows you to play to level 20 and has an unlimited amount of time) or you can go to Wal-Mart or any other store that carries the expansions and buy them, or you can digitally buy the expansions as well but you cannot play the game completely for free, as it is 15 dollars a month.
World of Warcraft has a monthly subscription, regardless of which expansions you have installed. The expansions do cost money, but once installed you don't have to pay extra - the subscription remains the same.
You will still have to pay the 15$/mo. -- If you do not want to pay a store for the installation media, you can download the installer form the World of Warcraft site. But like the previous answer, you still have to pay the monthly fee. You also have to pay to start the service and for the expansions.
Vanilla means from the original game, so the game without expansions or mods. Vanilla World of warcraft means everything that does not include the expansions. A vanilla World of Warcraft boss would be onyxia
the monthly fee is about 15 dollars a month for world of warcraft the expansions dont change that
Blizzard is the developer of Warcraft Warcraft 1 2 3 All of the World Of Warcraft Expansions! Starcraft 1 and 2 Diablo 123!
Vanilla refers to the original World of Warcraft, without any expansions. It does NOT refer to Burning Crusade, Wrath of the Lich King, Cataclysm, or any of the Warcraft RTS games (Warcraft, 2,3).