Barnes & Noble is looking to become your go-to place for eTextbooks, study tools and pretty much anything else in the related field. Up until now, there have been few all-encompassing eTextbook delivery method, and the options that are out there are generally poorly thought out, spartan or simply not marketed well. 'Course, B&N isn't coming right out and saying it, but why else would you create a comprehensive application suitable for Macs and PCs that not only puts digital textbooks into the hands of students for up to 40 percent less than conventional books, but also a full library of study aids, test prep guides, periodicals, and hundreds of thousands of trade and professional titles. Moreover, the app "provides students access to all of their materials -- eTextbooks, lecture notes, syllabi, slides, images, trade books and other course-related documents -- all in one place, so their digital library goes wherever they go." Oh, and did we mention that it also supports highlighting and notes, both of which are searchable? Yeah. Currently, Nook Study is being used in a smattering of universities, with an August rollout pegged for universal use. Lookout, used bookstore -- the end could be nigh.