Ways to Read Books Online

Many of you have chosen to read eTexts and other electronic books online with your devices or on the computer during CLEAR time.  Have you found a specific app or website that's great for reading books online?  In the comments below, write the name of the app or website.  Tell a little about how you discovered it and why you like to use it (or why you don't!).  Finally, be sure to let us know how we can access the resource.