The site is meant to serve as a center for information and collaboration. The idea is that the site will work like a wiki-page, allowing people to upload and download course-related documents (for example, typed solutions to exercises, scanned lecture notes, etc.), post comments and corrections, and hopefully do any other helpful activities you can think of.
Each course has its own page. The top of each page lists general course information and course announcements. Beneath the general information and announcement section is a discussion board (a.k.a. forum), where all students can post course-related comments and offer feedback on posted documents. At the bottom of each course webpage there is an "Attachments" section that allows you to upload, download, and view course-related documents.
All the information on this site is just as good and helpful as we make it. Please share your knowledge and help improve the level of scholarship here at your university.