The ability to explore both Azeroth and Kalimdor, and level to level 60.
After the classic World of Warcraft game comes The Burning Crusade expansion. The current expansion is Wrath of the Lich King. The next expansion is Cataclysm and will be in stores December 7th
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This is not possible, the original (classic) World of Warcraft must be installed first as the Burning Crusade is an expansion (addon). You can download the installers from the World of Warcraft website.
The free trial involves only Classic World of Warcraft - the next expansion pack in line is The Burning Crusade.
Don't buy gold. It ruin's the World of Warcraft economy, most of the time the money comes from exploits in the game, and it is Illegal.
A "proc" is an event. The word comes from a shortening of the word "procedure" and is commonly used by people in Role Playing Games such as World of Warcraft.
The Frostmourne sword comes from the video game World Of Warcraft. World of Warcraft was released in late November of 2004 in North America and Australia.
The simple answer to your question is yes, you can go online, but you cannot play World of Warcraft: The Burning Crusade offline like you could in the classic RTS Warcraft games.
If you already have a valid serial number you can add it to a battle.net account and download it there :)
A registration code comes in the box, it is unique for each box.
When you buy the classic World of Warcraft game, you will receive one month of free playtime with it. Expansion packs (The Burning Crusade, Wrath of the Lich King, Cataclysm) do not come with any additional playtime.
Patch 5.0.0 should be the next major content patch (right before Mists of Pandaria comes out) for World of Warcraft. There probably will not be a patch 4.4.