You can know re-download any song, app, or book that got deleted off your computer in iTunes. If you don't know how keep watching for the demo! Apple's Blog ...
iTunes U Content Tutorial
Re-Download Purchased iTunes Content
The “geek mind” is concerned with more than just the latest iPhone rumors, or which company will win the gaming console wars. I4U is concerned with more than just the latest photo shoot or other celebrity gossip.
The “geek mind” is concerned with life, in all its different forms and facets. The geek mind wants to know about societal and financial issues, both abroad and at home. If a Fortune 500 decides to raise their minimum wage, or any high priority news, the geek mind wants to know. The geek mind wants to know the top teams in the National Football League, or who’s likely to win the NBA Finals this coming year. The geek mind wants to know who the hottest new models are, or whether the newest blockbuster movie is worth seeing. The geek mind wants to know. The geek mind wants—needs—knowledge.
Read more about The Geek Mind.