u/Indigohhh

So as the title reads I just turned 20 and I’ve never invested before. I have about 600ish dollars saved that I’m trying to put towards a car but it’s a slow process. I make about 1600 a month with a little less than half doing towards rent. Am I in an okay situation to start investing? I also have about 5,000 dollars in medical debt does that affect anything? I honestly just need this explained to me like I’m 5 and also a caveman.