Here are some eBooks that you can get for free today from Amazon's Top 100 Best Sellers:
Download A Hidden Fire: Elemental Mysteries Book 1
Download Why Quantum Physicists Don't Get Fat
Download Kindle Publishing Revolution - Amazon Kindle Publishing Guide
DownloadPirates of Savannah: The Complete Trilogy - Colonial Historical Fiction Action Adventure (Pirates of Savannah (Adult Version))
Download Organic Gardening Beginner's Manual
Download Cloaked in Secrets (Annals of Wynnewood)
Download October Girls (An urban fantasy / paranormal romance)
Please note that the price is $0.00 at this moment, but that could change at any time. Be sure to check the price before checking out to verify that it is still free. Kindle eBooks can only be offered for free for 5 days.
Also, these ebooks are specifically for Kindles or Kindle Fires, but you can go here to download a free application that enables you to read Kindle ebooks on your PC.