Check that you are required to register
Gather your full legal name, date of birth, Social Security number, current mailing address, and email address
Go to the Selective Service System registration website
Complete the online registration form
Submit the form
Save or print your confirmation for your records
If you cannot register online, request a paper registration form from a post office or complete a registration form at certain government offices
Mail the completed paper form if required
Verify that your registration was received and processed