It's a decent introduction to queer culture. That being said, it's broad to the point of leaving out several identities (in-depth discussions of nonbinary individuals and aromantic individuals, for example, are nearly entirely absent) and for the most part, only pays attention to queer readers in the UK and US. In addition, the language is occasionally juvenile; I can see how this might be appealing, especially to young readers, but it is very much not to my taste. It also runs into the problem of not always contextualizing certain aspects of queer culture; for example, the author tries to put a positive "this-is-historical-representation" spin on the Ancient Grecco-Roman practice of pederasty, the act of a teenage boy engaging with an adult man. It goes unmentioned that this is nothing short of abusive and should not be glorified, nor does the author delve deeply into the fact that this wouldn't have been considered queer by the Ancient Greeks and Romans as we would call it today. In the end, it's designed to be an extremely broad, generally contextless collection of names, events, and pieces of art. It works as a branching-off point, especially if you're newly questioning or out, but it's not exactly the end all be all.