Thing explainer is a collection of large-format blueprints (technical drawings) described using only the thousand most common English words.
The book is full of detailed diagrams of interesting objects, along with explanations of what all the parts are and how they work. The titles, labels, and descriptions are all written using only the thousand most common English words. Since this book explains things, Randall Munroe called it Thing Explainer.
The diagrams in Thing Explainer cover all kinds of neat stuff—including computer buildings (datacenters), the flat rocks we live on (tectonic plates), the stuff you use to steer a plane (airliner cockpit controls), and the little bags of water you’re made of (cells). (600 MUN)
Also available by Randall Munroe: What if? serious scientific answers to absurd hypothetical questions (500 MUN)
Bonus: write your own text using only the ten-hundred words people use the most.