This book was in my Audible library for quite a long time until I accidentally noticed it. It turned out that my wife had already finished it and applied some wisdom in our day-to-day life. At just over 4 hours, this was a pretty short title, yet packed with excellent knowledge.
The author doesn't preach but instead emphasizes support and understanding. I'm not sure how practical this book is to us at the moment (our son is just inching toward two years old) — however, I feel like it will become a staple quite soonish.
Overall, I would recommend "Busy Toddler's Guide to Actual Parenting" to all the parents of the small ones out there. Nothing particular caught my eye in a bad sense of it, so the book must be decent (you know how picky I am, sifting through the research and pointing out all the places where the authors are wrong). There is excellent advice for handling toddlers (especially in tantrums) in compassionate and emphatic ways.
Susie aims her book at mothers, though, so don't expect a lot of actionable advice for the fathers. However, the stories and struggles the author tries to offer support for the mothers bring forward the places where we, as fathers, can be of help. It is always better to know what and why every family member does in raising the small ones!