As a machine learning tutor myself, I find this book helpful for beginners, it offers a good compromise between the theory and hands-on practice with code and implementations. That's also what mlcourse.ai aimed at, and if I were to write a book on Machine Learning, it'd have been something similar to this one. I also enjoy the option to highlight and comment on the book content, this makes it almost a forum supporting readers. On the downside, the book mostly describes concepts and algorithms and provides only toy examples to play around with. I'd love to see some real-world practical applications described as well. For example, speaking about KNN, it's nice to not only provide the intuition with oranges, apples, and lemons but also to mention that its variation Approximate Nearest Neighbor search is used in many day-to-day applications: images search, text search systems, look-a-like models for finding similar customers, etc. Or at least I'd suggest providing examples with datasets that are a bit closer to those really used in industry, e.g. with Kaggle datasets. I know it's much to ask but having examples of some real-world applications of ML would render this book unique.