1. Why Machines Learn - Anil Ananthaswamy
Fantastic exposition of machine learning. The author does an amazing job of bringing a technical subject down to an easily readable level.
2. The Joy of Abstraction - Eugenia Cheng
Similar to the above review. I never thought Category Theory could be made so easily readable!
3. A Little History of Philosophy - Nigel Warburton
Small, compact book. A quick interesting jaunnt through the history of philosophy. Entertaining and educational!