How I Learned to Fly by R. L. Stine
Wilson Schlame makes Jack feel like a total loser. That's how Jack ended up at the beach. In a creepy old abandoned house. In the dark. Trying to hide from Wilson. But now everything's about to change. Jack has just dug up the coolest book on the planet. It tells humans how to fly. Poor Jack. He only wanted to get back at Wilson. But now that Jack's soaring high among the clouds, things back on earth are getting really scary...