A CA psych tech (LPT) is similar to a LPN/LVN. LPTs are not nurses but can pass medications and do several (but not all) the things that a LPN/LVN can do. They are licensed by the CA Board of Licensed Vocational Nurses and Psychiatric Technicians (BVNPT - Psychiatric Technician
There are also mental health associates (MHAs)--these are unlicensed positions whose duties are similar to those of CNAs/care partners/techs in medical hospitals...just with a psych focus. The level of education required for a MHA is nowhere near that of a LPT.
In VA, psych techs are not licensed because tech jobs essentially like the MHAs described above.
To get hired as a psych tech, check out the job listings at your local psych hospital/psych unit and when you see postings for a tech position, apply for it. It usually helps if you have experience or a background in psych, so your being a psych student could help your chances.