Well, the traveling teachers do come through every few months," said the Baron. "Yes, sir, I know, sir, and they're useless, sir. They teach facts, not understanding. It's like teaching people about forests by showing them a saw. I want a proper school, sir, to teach reading and writing, and most of all thinking, sir, so people can find what they're good at, because someone doing what they really like is always an asset to any country, and too often people never find out until it's too late.
Terry PratchettMy advice is this. For Christ's sake, don't write a book that is suitable for a kid of 12 years old, because the kids who read who are 12 years old are reading books for adults. I read all of the James Bond books when I was about 11, which was approximately the right time to read James Bond books.
Terry Pratchett