I like reading from the book most of the time. One reason could be that I've paid for it and feel like I've made a commitment and learn it, so it gives me some

I like reading from the book most of the time. One reason could be that I've paid for it and feel like I've made a commitment and learn it, so it gives me some more motivation. I can doodle, and write down thoughts easier than doing it on the web or using one of the features in any pdf viewing app.