On Desktop or Laptop:
You will find Mixbook.com will stay available in an alternate tab after you have opened the Mixbook studio. To return to Mixbook.com, simply click on your browser tabs and select the tab with Mixbook.com.
On Mobile Device or Mixbook App:
While in the studio, click the "Exit" icon in the top left corner of the screen to return to the main Mixbook.com page.