The Essential Book for Young Lads

The Essential Book For Young Lads is a book that appeared in Diary of a Wimpy Kid: Old School

Grandpa gave Greg a book while packing up items to Hardscrabble Farm. Greg said that the book was outdated, but he did not want to hurt his Grandpa feelings, decided to take the book with him during the camp. When Greg found out that the other group had raided his cabin to find Graham's snacks and using his baby wipes to clean up and tried to flush it in the toilet, causing it to clog, he flips through the pages and realized that there was a ton of useless stuff, like how to make a Potato Radio out of household objects, and a ton of good stuff on surviving wildness, like how to identify poison ivy and how to start a fire without matches.

Eventually, the book was burned as firewood since Greg's group were getting desperate.