In the menu you will find the VIP login as well as information on contact, data protection and more.
In the library, select your book from a list of all available titles.
Start the scan function by clicking on the scan button.
Under bookmarks you will find your bookmarks, i.e. the saved content.
In the book overview you can see the currently selected book. Click on the title to open the book overview. Here you will find, among other things, the "Manual page selection" with which you can select pages manually.