This competition is a US Nationals 2017 Qualifying competition. While the competition is called Qualifornia, prospective competitors do not need to live in California to register.
Registration fee: $10 base fee to compete, plus $5 to compete in 3x3, and plus $2 per each additional event.
Please see the competition website on CubingUSA for more details and to register. Registration is not complete until fees have been received.