You can easily add this app to your mobile phone's home screen. 

iPhone: At the bottom of your iPhone screen, tap the Share icon (the square box with an upward-pointing arrow). Scroll down the menu and select "Add to Home Screen".

Android: Tap the three vertical dots (Menu) in the top-right corner of your Chrome browser.. Select "Install app" or "Add to Home screen" from the drop-down list.

You are all set! Enjoy quick, one-tap access to your learning materials anytime.