The World of Warcraft to put it quite simply, is a game. It's a very large game with a very large player base but it is nevertheless still a game, and when you get right down to it, it spans continents, races, ages and even worlds.
The amount you have to pay per month is 9.00! Which to some may seem alot of money, to pay per session overall in a year each member pays: 108, Blizzard Entertainment earns 1080,000,000 a year.
First released to the world (as we know it, that is), in November of 2004, World of Warcraft is what is known as an MMORPG. That's Massively Multiplayer Online Role Playing Game to those of us who are slightly clueless in that respect.
The whole aim of the game is unknown as it seems to be never-ending which is very good for the company so they earn more money as the game is growing and growing. You start in a safe area depending on your team The Horde or The Alliance. Horde known as the 'Evil Side' of the game consists of Trolls, Orcs, Tauren, Undead and Blood Elf's, each race has a special skill known as a 'Racial Passive Skill' like with the trolls 'Beserking' which enables you to have more rage and run speed increases.
Alliance consist of Gnomes, Dwarfs, Night Elf's, Draenie, and Human, as the same as the horde they have special racial abilities like with the Gnome's when trapped in a freezing/trap effect they can escape from it.
Also if you decide to go with World of Warcraft and get yourself an account, the character you created for the trial version can still be used. But now that you have a better idea about the game you might want to create a different character, then again you might want to stay with your first World of Warcraft creation.
In World of Warcraft you never run out of things to do since much of the game is structured around questing. Whenever you enter a major new location for the first time, you will feel almost overwhelmed by the number of quests available, which you will be able to clearly spot since quest-giving characters helpfully stand there with a big, noticeable exclamation mark over their heads.
Luckily, the game's more-than-a-thousand quests are made quite manageable by only being offered to you when you are qualified to complete them, and you can have no more than 20 quests pending at a time. Eventually you will have to come back and complete a quest so you can get to the next.