I feel as though someone's handed me the moon and don't know exactly what to do with it

I came online trying to find people with intelligence, just to make contact with people who have more than half a mind, and now I feel like I'm in way over my head. I discovered this site after learning and listening from Susan Blackmore. Unfortunately, I've opened a door in my brain that I won't be able to close. Being a 19 year old female, I find myself at a point where I'm old enough to take responsibility for my actions, but not quite old enough to be taken seriously on any kind of relevant thought I get!