In one sentence, describe what the following article is about:

.  You can virtually purchase Warcraft III from Blizzard by visiting The Blizzard Store or by purchasing it from a retail supplier. Connect to Battle.net and create an account. You will need this to play DotA Try to make your account name distinctive and memorable. Visit Get DotA and click on "Download" on the "Latest Map" half of the screen. Save the file someplace you have access to it easily. The maps folder is located in your game's directory. net. The latest patch will automatically be downloaded when you log in.

Summary:
Make sure you have Warcraft III: The Frozen Throne, along with a Battle.net account Download the DotA map. Copy and paste the file in your maps folder. Boot up Warcraft III and log in to Battle.