Stormbreaker also teaches the importance of trust and friendship. Alex can't stop Sayle on his own, so he relies on the help of his friends and allies. He learns that he can't always do everything himself and that it's okay to ask for help when he needs it.
Finally, Stormbreaker teaches the importance of courage. Alex faces many challenges in the book, but he never gives up. He shows us that it's important to be courageous and to never let fear hold us back from doing what we know is right.