As far as textbooks go, this one is actually pretty engaging. Instead of focusing on prescriptive grammar (aka telling people that they're wrong), it embraces a descriptive form of grammar that describes trends and acknowledges exceptions to grammar rules.

While some of the examples can be a bit cringey (looking at you, Chapter 17: Grammar in Social Media) or arguable in correctness, the authors explained most topics in easy-to-understand ways. There are plenty of practice sections, too, which is helpful in gauging your understanding of the text. I haven't read anything else about grammar, so I'm not sure how it holds up in comparison to other textbooks, but as it stands, I would recommend it to those who really want an in-depth look at grammar trends and sentence trees. However, if you're looking for a more prescriptive understanding of grammar, I think there are probably more fitting textbooks for you.

This book also contains sections at the end of each chapter that explain how this information can benefit educators, which I think was interesting to include as well.

Also, am I going to be good at grammar now? That's debatable, but I can draw a sentence tree, and I never want to read an excerpt from "Hills Like White Elephants" ever again.