Khan Academy is an amazing, free educational resource! I’ve become way better at math with its math lessons. I wish I’d had it when I was a kid! Check out their mental health section under Health and Medicine or one of their myriad of other subjects. You have to sign up for an account, but it’s completely free. If you’re a parent or teacher, there’s an option to set up accounts for children and track their progress.
As the site’s motto says: You can learn anything!