I have kept around and distributed multiple copies of The Elements of Style, by Strunk and White, for the past few years (lots of revisions of this out there, 4th might be most recent iirc). It's like a 9$ book and the guidance is priceless.
Most of the guidance is very outdated. It's likely to confuse more than clarify unless you've taken the time to study modern resources. I prefer Bryan Garner's work, like his usage guides.
There is a great episode of Lexicon Valley where the dustier advice from The Elements of Style is called out: https://podcasts.apple.com/ca/podcast/against-strunk-white/i...