At 12 p.m. EST on Feb. 21 people can register to purchase tickets to SDCC 2015. The EPIC Registration landing page will open at 11 a.m. (EST) for you to enter your personal registration code and authorize your device to enter the waiting room.
The link to the landing page will be emailed 24 hours in advance to those who have pre-registered for the show in advance.
The Comic Con website can be found HERE.
Good luck!