I am going to post a more extensive review here or on my new blog (not yet online).
I have learned a lot by reading/studying this book. Not just about Node.js, Express and MongoDB, but also on how to deploy the database to MongoDB Atlas and the web app to Heroku. I was really looking forward to getting introduced to Heroku and MongoDB Atlas.
I can recommend this book, but don't wait too long to read it, because this technology is in constant and I already got some warnings about deprecated packages.
Given that I found a bit more code errors than I would like, 3 or 3.5 stars seems appropriate.
However, compared to the blogs, online courses and video tutorials that I have read and watched the past couple of months on the topics of Node.js, Express and MongoDB, I will give this book four stars, because it really is significantly better than what is available online.