Where Can I Find The Cheapest Health Insurance In California?

Basically I am enrolling in this EMT course and they REQUIRE that you have proof of health insurance before enrolling in the class. Where can I find the cheapest insurance just to fill this basic need? Doesn’t matter about coverage and co-pays, etc. just need something to suffice until I’m done with the course, then I’m going to drop the insurance once I get it from my job as an EMT, ya know.
Me: married 23 yr old female in perfect health.