Sex Ed?

So Im graduating high school in under a month and I've went through this whole 18 years without any form of sexual education and I'm wondering what did i miss is thwre stuff that i should know before i head off to college if so can u tell me or tell me where i can educate myself im not planning on becoming sexually active when i go to college but i think i need to know like the basics on like safety and everything .Tbh I don't know what I need to know . Can anyone help educate me?