I need advice/help on women’s health

Hi, I know this might make me sound dumb or something but I am turning 21 years old and I don’t really know much about women’s health. My mom never really taught me anything or helped me with anything besides my period. Do I need to schedule a gyno appointment? What does itching down there necessarily mean? What’s a weird discharge? What is the recommended way to clean ur vagina? Stuff like this I dont really know. I only know what I’ve been able to find on google.