Help and Support: SigPort site has basic Q&A info. For more detailed info and questions, please visit this page, including two usage videos:
https://piazza.com/ieee_sps/other/sigport001/home
There, we are using an interactive tool of "Piazza" that has been adopted by many course instructors for Q&A and community exchanges among users etc. Although the general info won't require log-in now, you are receiving an invitation email from Piazza to allow you to create an account or use an existing account to participate and view all new Q&A from our trial user group. We strongly encourage you to create this Piazza login and participate.