Getting My First Car?

ok so i'm a 16 year old female & before you no it i'll be 18 :) in no time... I would like 2 get my first car at the age or 18 0r 19.... How can i get a car with out a cole signer. btw do i even need a cole signer if i'm 18? I no if u have good credit u can just go & get a car but like how i don't have any credit as yet do i have 2 buy the car cash? Please don't me mean because i don't no..