I randomly got my hands on this book, and the book itself is a little dated, written in 2003 (which is 16 years ago! Good lord we are old). The author herself admitted that she grew up in a Church of the Nazarene (which I've heard of, but didn't know much about, apparently it's kind of a Methodist off shoot that went way more conservative), grew up, then tried going to virtually every kind of church trying to find the "right" one for her. From the way she wrote I think she's pretty moderate, holds core Christian believes pretty strongly but also open-minded, and she's all about gender equality so she wrote at length about churches that allowed or disallowed women in church leadership position.
The book was kind of a fun read; it broke down a lot of the denominational differences, and the part about the history behind each denomination or branches of Christianity was pretty fascinating. It went into a little on the theological differences (like Calvinism vs Arminianism), but you could tell she's not a theologian as sometimes she just resorts to copy-and-paste the statement of faith from the denomination's website. There were some inaccuracies; she claims that Eastern Orthodox, Oriental Orthodox, and Eastern Catholics are identical, when they are most definitely not (the first one has its main see at Istanbul/Constantinople, the second one has its main see in Alexandria, while the third one isn't orthodox technically and is in communion with Rome. For whatever reason I've read extensively about this on Wikipedia; for example, the national church of Armenia is the Armenian Apostolic Church, which is oriental orthodox, but there is also an Armenian Orthodox Church, which is eastern orthodox, the two are not the same at all. In Ukraine, there is the Ukraine Orthodox Church which is Eastern Orthodox, which used to be part of the Russian Orthodox Church, but as you may have heard the two countries are in some *drama* lately so the Russian Church do not recognize the Ukrainian church as independent, meanwhile the rest of the Eastern Orthodox churches, including the "main" one in Constantinople/Istanbul, do, so the Russian Church kind of just broke relationship with the rest of the Eastern Orthodox community.... Meanwhile, outside of all of this, there is an Ukrainian Eastern Catholic Church, which is NOT Roman Catholic, but in communion with Rome, its head is a Major Archbishop that reports to the Roman Pope... Anyway the point is those 3 things are definitely not the same, at least in 2019). Anyway, it was a fun read I suppose, I don't know how well it'll serve as a guide to choose a church in 2019 though, unofficial or otherwise.