question for coursesmart (etextbook software) users

<p>i'm going the ebook route next semester, and i have a few questions:</p>

<p>do you download or use the online version?
how many pages can you print in a day?
how many pages can you print in a "session"
if you download, can you download the book to a USB? (i'll download the software, but i'm afraid my computer will crash sometime soon. all i would have to do is use another computer and i still have my [paid] textboooks)</p>

<p>thanks!</p>