I remember buying an "SEO Made Simple" book in 2009 because I wanted my blog to have better rankings on Google. It was about 50 pages, full of typos, and in the end it ended up doing more harm than good, probably. I never really dug too deep into the subject/practice of it, though. I figure people can read my blog if they like, if they can't find it (or don't stumble across it) life still goes on :)
SEO, come to think of it, is a lot like Bitcoin: it's the solution to every single problem under the sun. End-all, be-all, cure-all. Now if/when Elon Musk starts up a SEO company that pays in Bitcoin - well, let's just say the whole epidemic of war/disease/famine/poverty will be a thing of the past, and we can all be Bitllionaires who are absolved of the nasty (past-tense) condition of what we called "suffering".
Hope you're doing well, Inquiry :)