How do I get a Medical Marijuana Card?

Hello. I suffer from acute depression and I was told that medical marijuana can help me. I have been using Prozac Selective serotonin reuptake inhibitor (SSRIs) for the past seven years but I really want to be able to stop using this medication. Just wondering what is the procedure I need to follow to obtain a medical card that will allow me to use marijuana for medical treatment for my depression. thanks in advance.

Age: 47