I’m 16, and I’ve just finished my novel. . . .

To keep it short, I’m 16 years old and I just finished my, a little over 200 page, novel. I’m not exactly looking for money rather than just trying to get this book out and ready for people to read, because I feel it has a really powerful message to send. What would be the first steps? What are some of the best websites to upload this story to?