Do you know of any studies or do you have preferences? e-Reader, PC, or Book?

Although it is often mentally difficult to transition to, using an eReader is ideal. I myself use one every day. eReaders dont have back-lit screens to they wont make your eyes feel tired. It is identical to reading a paper book, but without the various troubles of doing so. I recommend the Ectaco jetbook. There are various models and it is one of the cheapest on the market. Having open source firmware, it doesn't require require any specific formats of text, so you can load just about anything onto it. Having a vast library in a compact device is certainly advantageous to paper books. You can quickly grab doents from work and load them onto it for reading on the go. I myself have my textbooks loaded onto mine, so I only carry a small device with me whereas everyone else is breaking there backs. So, theres my answer. eReaders, particularly the jetbook in my opinion, exceed paper books in convenience, and computer monitors due to the lack of eye strain. Hope this helped!