Secret Sources
Books can be great sources of information, secret and otherwise.
Become a Master of Magic and Mystery with the book Hocus Pocus - a journey through the history of magic, which will also teach you more than 40 magic tricks.
The Codebreaker's Handbook by Herbie Brennan is full of information about developing and breaking codes as well as codes in history.
If you're interested in spy gadgets and spies, you could try the book It's True! Your Cat Could be a Spy.
If you want to learn to write a good joke, you could check out the book It's True! You Can Make Your Own Jokes.
Ask your bookseller or librarian for other suggestions.
You could also ask your school librarian about safe websites where you can find out about spycraft, magic, jokes and other topics.
