Bayesian Workflow book (by Gelman, Vehtari, McElreath, Simpson, Margossian, Yao, Kennedy, Gabry, Bürkner, Modrák, and Leos Barajas) pdf is now freely available at the Bayesian Workflow book website. You can still buy hard copies, e.g., directly from the publisher with a discount code at the book website. The PDF has some typos fixed and new Chapter 3 excercises (the printed book accidentaly had Chapter 2 exercises again in Chapter 3). You can check the whole errata. The book website has also the code for all the case studies in the book, plus links to other related case studies.
And please let us know if you find any additional mistakes in the code or book that should be fixed. You can open an issue at GitHub - avehtari/Bayesian-Workflow: Bayesian Workflow book code and case studies · GitHub. Thank you!