Good morning, @LynnMorrisey ...
Unfortunately, folks here in the Canvas Community do not have access to your school's Canvas environment or your course(s). Therefore, we wouldn't be able to tell you exactly how to download your PowerPoint files or any videos your instructor has included in your course. Your best bet would be to contact your instructor directly, and he/she should be able to help you out. Here's a Guide on how to contact your instructor within Canvas:
How do I get help with Canvas as a student?
Let us know if we can be of further help...thanks!
