In addition to the confirmation screen upon registration, you will also receive a confirmation email within 24 hours of registering for the ticket sale. It will come from participantsupport@burningman.org (be sure to check your spam folder and search for “participantsupport” in your email).
You can also see your registration status in your MyTickets account. If this is your first time logging in to MyTickets, you can use the “Forgot your password” link to create a password and access your account.