I'd like to suggest you guys add "a "Next" and "Previous" buttons" on top of each page as well.

So if we got lost from the page, and have to go back to the course, or certain pages, we don't need to scroll down all the way to each page and find the "Next" and "Previous" buttons, but we can do the same thing from the top of the page which will save all of us some times (time adds up!!!) and hassle. 

Thank you!