There's some fairly strange and dated advice in here, like entering a door before a woman being impolite (unless it's a revolving door; those require strength, which women do not have?) or being emasculated by shaking hands while sitting down?

Nope, those are still valid. Revolving doors can really be quite hard to get started even if you're a strong (and heavy) man.

https://www.onedayyoullfindyourself.com/opening-a-golf-umbre... - Hey! I feel attacked! :D

Thanks for sharing this.