Cheapest insurance?

I must understand what is needed and it is not essential and what drops under full coverage and liability in the state-of GA.
What's the least expensive insurance /">insurance for an 18 yo first time auto?
"I'm 18My family of 4 has about $32000 yearly revenue. Just how do I submit an application for medical insurance?
I am currently wanting to get driving insurance with this particular company and wondered do I also need a total insurance policy alongside the one with this specific firm"Can I still be on my motor insurance plan if they're in a different condition