To edit your page, click on the pencil icon in the lower right corner of the screen. Make sure you are logged into Google Apps using your BU account.
Only edit your personal page. Use the comment field to comment on your classmates' pages/work.
When adding content, make sure it is above the comment box.
When you're ready to submit, click the "Publish" button, review your edits, then click "Publish" again.
Questions? Ask them in the field at left. Answers will be posted in the table below.