Elements of Positional Evaluation By Dan Heisman...
https://www.amazon.com/Elements-Positional-Evaluation-Dan-Heisman-ebook/dp/B003RCK1SO/ref=sr_1_1?crid=13GE6DJH8K09J&keywords=Elements+of+Positional+Evaluation&qid=1643052841&s=books&sprefix=elements+of+positional+evaluation%2Cstripbooks%2C197&sr=1-1
The art of positional chess by Sammy Reshevsky. It was the first chess book I ever studied.
Was it good?