Things You'll Need
Instructions
Make sure your PS3 is connected to the Internet. The PS3 may connect directly to the Internet with an Ethernet cable, or connect wirelessly through a wireless network router. (For more information on connecting the PS3 to the Internet see Resources.)
Enroll in a PlayStation Network (PSN) account. To enroll, select the "Sign up for Playstation Network" icon on the horizontal menu bar on your Home screen. You will be required to enter in a name, birth date, street address and to create a username and password for your PSN account. You will also be asked to select a security question in case you forget your password.
Start playing PS3 online. Go to the "PlayStation Network" icon and sign in. When prompted enter in your username and password and then click the "Sign in" button. You can then insert your game disc into the PS3 console and all online gaming options will become available for that game. You may also chat with friends and shop at the PlayStation Store from your online PSN account.