Going a step beyond standard e-books, Inkling makes textbooks interactive with features such as pop-out slideshows for illustrations, review sections with live links back to the places in the text where the topic was discussed, self-assessment tools and more. It truly does make the material more engaging.
You can access Inkling titles via an iPad or iPhone, or via a Web browser on a Mac or Windows PC. Your work is synced among devices.
We like the pricing model: You can buy either entire books or just individual chapters starting at $5.99 each. (There are usually sample chapters available for free.)
There isn't a wide selection of textbooks available yet, but the company's publishing more all the time -- and it doesn't cost anything to look.