Facts About Crack Cocaine

Question by Hannah: How do you do cocaine? IT’S FOR WRITING PURPOSES!?
I am writing a story in which I depict one of my characters doing cocaine. Being a teenager who has never done drugs (because I’m a nerd, couldn’t you tell by the fact that I’m writing a story?) I’m not sure how to go about writing this scene. All I know about it is that 1.) you get it in an ally 2.) it’s white powder and 3.) you put it in a line then you snort it (with money if you’re fancy). He is the main character so I would like to know the details of how it feels while you snort it, if there’s anything I’m missing in the preparation of it, the effects of the drug in your system, and any physical and/or visible signs of an addiction. I AM NOT PLANNING ON USING DRUGS. THIS IS FOR CREATIVE WRITING PURPOSES ONLY. Thank you so much for the help. I really can’t find much on the internet about this. If you have a link that would be great also. Any snippet of information would be greatly appreciated. Thanks.