When you open the Windows Store on your PC, tablet, or phone, you will see a section labeled books. Here you can purchase, download, and read your favorite books. Microsoft uses Edge to read and store your collection. You can access the books from the hub on the Edge toolbar. The new eBook store is being tested as part of insider build 15014, and should be ready to be a part of the Creators Update that will come out in April for everyone else. Here is more information from the developer.
Purchase and read e-books in Windows 10 Creators Update (PC & Mobile):
Windows Insiders in the U.S. can now purchase e-books directly from the Windows Store and read them in Microsoft Edge.
After purchasing your e-books – you will find those in your Books library, which is a new hub entry in Microsoft Edge right next to your favorites, history, downloads and reading list. Windows Insiders in the US get to try out this experience today starting with this build and we expect to add more content over time.
• Interactive reading experience: To navigate through an e-book, you can use the table of contents or seek bar at the bottom of the browser. You can search for words or phrases and ask Cortana to define specific words and view embedded video and audio content. And of course, pick up where you left of and leave bookmarks on the most interesting pages. You can even read your books when offline.
• Learning tools: You can widen text spacing to improve reading fluency and benefit from typography tailored to reading efficiency.
• Customize for you: Microsoft Edge is built for reading digital content on Windows 10 devices. You can make the reading experiences yours by changing the font and text size, themes, navigation control and more.
• EPUB support: In addition to PDF files and books purchased via the Store – you can read any unprotected e-book in the EPUB file format with Microsoft Edge.
With Books in the Windows Store and Microsoft Edge, everyone can discover and read their favorite content. This is a first step towards empowering people like entrepreneurs, students, creators, educators and others to learn and achieve more.