Everything You Need to Know When You Are 10
From an educational perspective, I sort of wish there had been a table of contents and an index, and that the book had been arranged into chapters of broad categories; life skills, food and cooking, emotions, outdoors, etc., because learning to use those parts of a book is yet another skill children need, but young readers will be fine with the way the information is arranged.
The sections on cyber safety, being at home alone, and what to do if you are followed are handled in an age appropriate way that won't scare young readers, while gently making them aware of being careful. There are a couple of brief explanations of lulling pranks that I, as an adult, didn't much care for; if my children had wasted perfectly good vegetable soup pretending it was vomit, it wouldn't have ended well. In general, though, this is a graphically pleasing compendium of interesting stuff.
This would make an excellent gift for someone turning ten, along with a box with some of the more exotic supplies that parents might be less likely to provide, like drink umbrellas, deodorant, a black light, and even some baked or fried crickets! (Or cricket based snacks, like those from the authors of Project Startup, Chirps.