My initial reaction, at the 50% mark was, "if my neurodivergent 'gender-nonconforming' ace worked half of this out already by near midlife, then either young people are the target audience (possible), I'm a genius (doubtful), she's also autismo (funny conceptually but clearly not true), or it's mostly obvious stuff (most likely)." But really, like the "Stuff Every Husband Should Know" book, there was a lot of great advice about halfway in, through the end of the book, which bumped it from 3 stars to 4.
The good:
1) The kissing guide. That's actually a pretty solid technique.
2) The handling of annoying pickup lines. The comebacks are clever, though I can't think of the last time anyone actually used a classic pick up line without total irony.
3) The breakup guide. Very civilized & yet realistic.
4) How to Cure a Broken Heart. Legit.
5) All her style/aesthetic advice is practical, actionable, specific & on point. All without any sort of bogus affiliate links or the usual spendthrift frivolity. That's pretty remarkable. The only exception is on a few occasions she mentions a consultation - that's a bit ritzy, and moreover, if you live in Podunk, Missouri and get a "consultation" from the local beauty salon, she's probably going to assure you that double braids, blue eyeshadow & daisy dukes are all the rage. I'm not saying she's wrong...just saying it's, ahem, very regional sometimes more than tailored to any objective professional standard, if you don't have access to a high level cosmetologist or stylist. At this point (because my library copy is an old version), you'd likely just get a free trial of a quality app that analyzes the math of your face/body, assesses ratios & provides objective specific feedback. Then go on Youtube & look for relevant tips to maximize/minimized accordingly.
6) Aging Gracefully. Is she old? Or is this aspirational? I assumed the writer was young, but she's writing like she knows and this also seems solid.
7) Thank you notes.
8) Hosting a cocktail party. This take is so charmingly 1960s, yet still relevant and classy. Next level social skills here.
9) How to Talk to Anyone, Anywhere. Her advice here is true, and I know it's true, because I've broken most of the rules on a semi-regular basis and that was wrong.
10) Cooking tips. Basic but really potent & succinct. Many people older than me don't know this stuff, and I think this should have actually gone in the Stuff Men Should Know book, because surely most chicks work it out sooner.
The meh:
1) Classic Go-To Drinks. The "Stuff You Should Know" series recognizes only 6 alcoholic beverages between all 3 of the books I've read. Kind of a hilarious Easter egg, but not the most imaginative or well-informed, so why bother at all?
2) Self-defense techniques aren't bad, but it's a very incomplete section. Also, forget slapping. Yelling "fire" may just confuse the matter. A few of the techniques are good, and the diagrams are useful, but it could do with a bit of refinement. That said, I do appreciate the real politik of pointing out you're not going to bust out some complicated kung-fu if you're startled, and also the slight allusion to the fact that most of that kung-fu wouldn't be especially useful if the guy is way bigger/stronger than you, better trained and/or has less pain sensitivity in general (contrary to what Marvel & Disney have been telling us with their recent "female empowerment" portrayals... :-\). I'm glad this section is included; it's meant to be rudimentary, and it's not the worst or necessarily bad advice, I just think it could be significantly better without adding much length. (But this is a lady with great a style advice & cocktail parties, so she likely comes from a different kind of background…)
3) Health Tips for Women - this is very magazine grade health advice, including "eight glasses of water daily". For much of the advice to be possible, you'd need access to health care in the first place, which is pretty dubious unless your job provides it & pays enough to cover it. She's also mistaken about accessibility of vitamins through our diet. Much of this section is just kind of dated or badly researched in general, though some aspects of it are timeless.
The bad:
1) "How to Buy a Car" assumes you will go to a dealership.
2) It's outdated at this point. It talks about phone books among other bygone relics of daily life. If there's a newer edition, I overlooked it.