WBBSE Books is an Android application that provides eTextbooks from Pre-Primary to Class 12 in Bengali, Hindi, and English languages. The app is developed by Billions Ideas and is available for free on the Google Play Store. WBBSE Books provides 1-Click Download, View/Read Before Download, Minimal & Clean UI, Purchase Suggestions/Question Papers at low cost, Bookmark Your Favorite Books, and e-Textbooks are well-categorized.

The app comes with easy-to-follow instructions on how to download and read the e-Textbooks. After downloading, the books can be found in the "My Downloaded Books" section. If the books cannot be found in the downloaded section, they can be found on the device file manager. The eBooks can be opened with Google Drive. The app also provides Google Drive links to avoid storage issues.

Overall, WBBSE Books is a useful app for students in West Bengal who want to access e-Textbooks in multiple languages. The app is well-designed, easy to use, and provides a variety of features that make reading and downloading e-Textbooks a breeze.