From the video:

:36 - Share your classroom experience!  Two Harvard Ed Professors, Dick Murnane and John Willett, are conducting research into the use of networked technologies, especially wikis, in classrooms, and they would love to hear from Summer Campers! Help the Researchers at the Harvard Graduate School of Education with their survey.

1:18:  Don't t get ahead!  Homework for week one has not been assigned yet.  We will announce homework, share resources and more on June 22nd -- the official starting day of PBworks Summer Camp.  Until then, please do not email support about homework assignments.

3:00: Ask your questions on our FAQ page.  All Summer Camp questions should be centralized on the FAQ page, and not via email.  We want to share the answers with the entire community - everyone can benefit from your questions, so don't be shy!  Edit the FAQ page!

Something is broken on your wiki? For questions about your wiki, and not about summer camp, contact support by clicking the help link.

5:00:  Secret Tip on how to put a page into a folder (look at the "more options" link and chose your folder before you even create the page).