To create a Course on Squarespace, you can follow these.
#1. Click the Plus icon on Main Navigation or Not Linked.
#2. Choose Course
#3. Choose a layout
#4. Next, click on Course Content to add a lesson
#5. Squarespace provides some example Chapters/Lessons, so you can add/edit easier.
#6. To add a Chapter or Lesson , click the Plus icon