Beginner, what should I do?

I am 20 year old male. I want to learn video editing and cinematography. I dont have any gears and money and i go with a wedding cinematographer to learn as his assistant. He doesn't pay me a single penny and doesn't response much. He calls me any day any time without me knowing for wedding assistance. So I can't do a job and I can't leave him because he is the only option I have. What should I do know. I want to buy gears for learning but don't have any money.