I've had a Kindle since Christmas and LOVE it!!! I take it with me everywhere. I don't think you can buy books with a toll free number though. I've never tried, I only get them off Amazon. There are a ton of sites out there that tell you about current free books for it. Yes, you can search for a certain kind of book for your Kindle. To find the free ones in your category, you just click on the drop down box and click list lowest to highest price. Feel free to hollar at me on here if you have any more questions about it.