Hi @AndreasLang521 Sometimes instructors use the downloadable resources as additional resources you can add in each section. This could include checklists, worksheets, templates, visual aids, PDF notes, source code, and additional links, as necessary. You can find more information here.
Things that I'll generally include are course lecture PDFs or a companion course eBook, the course curriculum, case studies, inforgraphics, worksheets, and links to outside resources on the Internet. Anything that I think will add value to the course-taking experience.