I’d want to suggest to keep in mind that many recommendations that are appropriate for a total beginner are not as appropriate for an advanced beginner, etc. etc.
Like what @stdnms quotes from Kageyama, which in essence is this:
“Cut where you can cut, connect where you need to connect.”
Good exercise for a total beginner, and after a while they’ll realize that it’s useless to cut groups which are independently alive anyway (likewise to connect stones which also are independently alive), and that it’s a total beginner’s mistake to atari every stone that you can atari, but first one’s got to learn what Atari actually is, and how stones can be connected and cut.
There’s even a proverb for that: “Only beginners play Atari.” (Of course, like with all Go proverbs, it applies only to specific situations, and it is clearer to say “Only beginners ALWAYS play Atari.”)
And sacrifice, i.e. NOT connecting all stones that I could connect, is something which I, for example, only learnt around 20-17k; before that I needed to focus on keeping my stones alive, and on how to do that.
Like … at a time in our early childhood it was really important to learn to crawl, but once we have learnt to walk, that’s obsolete, and we need to “un-learn” some of the habits and skills we have worked so hard to acquire.
Nevertheless we cannot just skip the crawling phase—there will be situations later in life when we need to remember our crawling skills, e.g. when we’re drunk or when we have broken a leg in our house and need to get closer to the telephone. (remember telephones? )