EMT Ambulance Licence CA)

Hey All Just passed my nremt not too long ago was looking at jobs and they told me to start doing stuff and what to get I understand I have already got my Grey Card *EMT CARD Did the livescan for that Do I need another live scan for the DMV to have? Another question I have is how do I study for the 30 question test? How long do I get whats the best way to study? Thank you in advance!