I purchased an eTextbook from Barnes and Noble and utilized their NOOKstudy program downloaded onto my computer. I had trouble from the start - the book would not download and open for the first several weeks. I was finally able to access it. It did fine for a while, and then when I had to redo my computer and reinstalled NOOKstudy, and needed the book for my final project and final exam, I was not able to access the book. The program told me I had reached my maximum number systems I could download the book to. It was the SAME computer that I had originally put it on. So all in all, I had no information to use for my final project and exam, and got an F on both which dropped my A to a low B. I complained to Barnes and Noble and asked for a partial refund for the remainder of the eTextbook - since it's still supposed to be accessible to me for another 2-3 months, and they told me that they cannot do that. What a waste of time and money! I definitely would NOT recommend using their eTextbooks or NOOKstudy program.