This is the scoop, nicked from here:

How many other books will help you thrash someone at conkers, race your own go-cart, and identify the best quotations from Shakespeare? The Dangerous Book for Boys gives you facts and figures at your fingertips – swot up on the solar system, learn about famous battles and read inspiring stories of incredible courage and bravery. Teach your old dog new tricks. Make a pinhole camera. Understand the laws of cricket. There’s a whole world out there: with this book, anyone can get out and explore it.The Dangerous Book for Boys is written with the verve and passion that readers of Conn Iggulden’s number one bestselling novels have come to expect. This book, his first non-fiction work, has been written with his brother as a celebration of the long summers of their youth and as a compendium of information so vital to men of all ages. Lavishly designed and fully illustrated in colour and black and white throughout, it’s set to be a perfect gift for Father’s Day and beyond.Chapters in The Dangerous Book for Boys include: The Seven Ancient Wonders of the World, Conkers, Laws of Football, Dinosaurs, Fishing, Juggling, Timers and Tripwires, Kings and Queens, Famous Battles, Spies, Making Crystals, Insects and Spiders, Astronomy, Girls, The Golden Age of Piracy, Secret Inks, Patron Saints of Britain, Skimming Stones, Dog Tricks, Making a Periscope, Coin Tricks, Marbles, Artillery, The Origin of Words and The Solar System.

More about the book here and here.

What every boy should have to hand:

# Swiss Army knife - removes splinters
# Compass - your trusty guide
# Handkerchief - doubles as a sling
# Magnifying glass - look at small things, start a campfire
# A marble - big one, for luck
# Needle and thread - to sew up wounds, mend torn shirt
# Pencil and paper - note down criminals’ car numbers
# Torch - read secret plans by night
# Fish-hook and thread - add stick and worm and you won’t starve
# Box of matches - dip the tips in wax (it waterproofs them)

The bowline knot: