You can click on the email addresses to send mail to other participants in the course. There is also an address called chile96.molly.harvard.edu to mail to the entire group. Please use this sparingly, as some of us get a lot of mail. You may also click on names to get a more extended bio and a picture of the person taken by Harvey during the meeting. If you don't like the picture, talk to Harvey or change it in photoshop yourself.
These are links to other locations, including some of our own home pages and other interesting sites where you can download stuff.