My buddy who was a 2300-ish player suggested the book "Chess The Easy Way" by Reuben Fine and I read it. It was written around the 1940s and is still a great book. "A Primer of Chess" by Capablanca is also great. And for total beginners, "Bobby Fischer Teaches Chess" is surprisingly helpful (it's almost entirely about back-rank checkmates).

Other than that, play a lot of slow OTB games. Don't play speed chess. Check every move carefully to make sure it's not a blunder. To do that, you have to spend time thinking at each move. That's not compatible with speed chess. Ancient advice is to literally sit on your hands while deciding a move. That is to slow down the impulse to move before you have completely thought it out.