In Pressbooks, the online book is called a webbook. To access the webbook used for your course, hover over My Books in the top ribbon and select the book listed for your course.

To navigate the content of the book, click Organize Book from the book dashboard (or Organize on the left panel). The Organize menu displays all the content of the book that has already been created.
From the book dashboard, you can also access the Pressbooks User Guide, which is an invaluable reference tool to use while you are creating your chapters. It includes answers and instructions for common questions and tasks.

In your course, you may be assigned to view only one or a few specific chapters to which you are assigned. If that is the case, you will only be able to view and edit those chapters that are assigned to you.
