More and more, the library is getting eBooks over print books, especially in fields like technology. Here are just a few from the last couple years:
Ebook Central is a good, easy to use ebook collection. We recommend starting here. (For some reason this tool might not let you in if you're on campus. It will work off campus.)
UAA's eBooks page lists other options. It has a search box to search all ebook sources at once, as well as links to individual eBook collections that you can browse.