Nurse Practitioner Schools

I am currently in college to become a nurse. I graduate associates. After my studies and take my NCLEX boards, I plan to continue. I want to get my license as a nurse practitioner, although I do not know what area I want to get my license, I would like to work with children, but I? Anyway, when I move my RN license, my husband and I moved to San Francisco, California. I was, when after my Degree RN wondering how long should I wait for my training until I get my driver's NP? What challenges will I do? What should I expect? Give me direct information and not as website information, I tried to do this research and I have not found what I want. Thanks for your help.