Just go to wp-admin >> pages >> Add new >> in sidebar select Template Moduled, and above visual editor click on Edit with King Composer. Now you are ready to drop elements from composer plugin by clicking the + sign.
Please watch this video https://www.youtube.com/watch?v=1mQKqcudqBQ&t=0s&index=9&list=PLKQNbrZLTAnrkoyPp-37daebU2zkM-nYe
this video explains how you can create pages using Composer Plugin and how you can play with them.
here are more videos you can see helpful.
https://www.youtube.com/playlist?list=PLKQNbrZLTAnrkoyPp-37daebU2zkM-nYe
You can easily install the demo content and then you can easily change content in demo content.
Courses, Teachers, Testimonials, FAQ's are in separate Post types which make it more effective and manageable for search engines.
And in pages you can easily add courses, teachers, testimonials, faq's and several other elements of Composer plugin to make your page 1 section or multi sections.