eBook Plus differs from eBook Basic in that it includes offline access and printing (up to 25% of the textbook). eBook Plus includes 180-day access to your assigned textbook in our eBook platform. eBook platform is PDF-based, so the layout is the same as the print version, with a bookmarked table of contents for easy navigation. Other tools include search, highlighting and note taking functionality. Available immediately after checkout.  More info on offline access here.  Also available: Study Guide, Lecture Guide and Quizlet. See Study Tools for more information about these popular study aids.