How long is a nursing career?

How long would i have to go to school to become a nurse? I know there is RN, CNA and some others. Can anyone give me more info? I'm in California and it seems I have to go to college and then a university but not sure. As a mother, I dont want to go to school for more then 2 yrs so what would you recommend?
I am looking to start a career and im not looking for scam jobs!!!

View this post on my blog: http://travelnursesuccess.com/how-long-is-a-nursing-career