Willing strangers--could be a 12-year-old, could be an expert, you'll never know--click on the questions and provide answers for free.

FORBES

And with many textbooks you can click on a Web address to obtain far more information about the topic than could possibly be included within the limits of a book.

FORBES: Book Excerpt

For weeks now, Blizzard has been offering pre-purchases of the game online, and you could download Diablo 3 in its entirety before release in order to simply click a button and install on launch day, and customers can continue to buy it through them at any time since then.

FORBES: In No Way Did Max Payne Outsell Diablo 3