How do I add to this list of proposals?

Once you register for your THATCamp and are approved, you will receive a user account on the THATCamp website. You should receive your login information by email. Before the THATCamp, you should log in to the THATCamp site, click on Posts –> Add New, then write and publish your session proposal. Your session proposal will appear on the front page of this site, and we’ll all be able to read and comment on it beforehand. (If you haven’t worked with WordPress before, seecodex.wordpress.org/Writing_Posts for help.) The morning of the event, all THATCamp participants will vote on those proposals (and probably come up with several new ones), and then all together will work out how best to put those sessions into a schedule.