Data Science at the Command Line, 2nd edition (free; 2021)
datascienceatthecommandline.com
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Two things are often vastly underappreciated in books/courses on DS: Data wrangling and use of the shell command line. This book does both, in an engaging manner. Chapter on parallel comp. is a nice bonus. Highly recommended for the budding data scientist, and for quite a few of the experienced ones.