In regards to the book's online version, I like how it has code examples that one can edit and run inline among the book's text. I often find myself, while reading a book on a particular language, opening up a new project in an IDE or a REPL in order to fiddle around with what the book it trying to teach. This makes it much more fluid. It was a pleasant surprise. It is a nice concept I have not previously seen done.…
I just wish we had hi-res, color, e-ink monitors with quick refresh rate. I can't bring myself to read an entire book online; even if it's free.
Unfortunately, all the books I really want to read with my eyes are too heavy to tote around or take on plane trips, which is almost the only time I have time to read them.
I need a REALLY GOOD reader. I wish I had a lightweight, clipboard-sized, hi-rez, B&W, PDF reader with the flick scrolling, pinch resizing, etc. of an iPad with the battery life to last a whole delayed flight from San Francisco->Tokyo->Singapore, door to door. I might be able to make do with a jumbo tablet if the USB ports that some airlines now put in the seats can power it.