Patient care technician and cna?

hi! i live in san diego area so cal..am gonna take cna classes this month as a road on becoming a nurse someday...i stumbled upon this Patient care technician thing and i need to learn more about it...r whats the difference bet. cna and pct?do i need to be a cna to get it..what is better training? done by the hospital or a certain college? schools in my area offering it?

thank you