There seems to be a standard somewhere that says that standards have to be too expensive for the average man to own
As has been said much is reconstrued into books
such as Calders but one needs to be aware that they can give questionable advice or ignore what is not close to their own experience or which they have not come across before. For example, Calder (and I am not criticising him as I think his books
are great) is in "Boatowners Mechanical,etc" very weak on isolated ground DC systems, in fact he gives them only a passing reference despite their being quite common place (especially in metal boats).
So I guess my suggestion is to get some reputable books but approach them with an open mind as well as get ones exposing differing experiences.
I had a giggle one day in what is a very good boatyard and one of them was saying to me how Calder and other's similar were one of his problems. Not because their books led to people taking work from the yard by doing it themselves but because people would come in and insist the work be done Calder's or another book's way. No matter how hard he tried to explain that there was a better way or that the person's boat's systems were different in some way they would insist - then when it didn't work well he would still get the blame