I guess that you have the very basics down. Even though my husband is a SAHD, he never learned at home, he does not want instruction from his wife, so it is hard to sit back. :-)
I have not found a good resource for the basics (although he enjoys Alton Brown science background).
To hijack your thread for my own interests, and provide a light hearted funny rant at the same time: ....
Examples
I finally had to tell him that he needs to wash the "dirt" off the mushrooms, vegetables need to be trimmed for any back spots / stems / roots, take the outer leaves off of brussels and cabbage to ensure no bugs under the first layer, etc.
"Trial and Error Cooking Method"
Yes, he has made my daughter "Jam, sprout and ham" sandwiches for school,
-has cooked cucumber into the spaghetti sauce because he thought it was the same as zuchinni that I sometimes use,
-has mixed up baking soda with powder in home made waffles (ok that one is easy) but what a shock, and
-loves uncooked onions, chopped up and adding to the sauce / dish about 20 seconds before removing it from the stove.
-Oh yes, and bottled jerk sauce. Lots of bottled jerk sauce.
Most problems, and angst however are related to timing. (He rarely gets hungry himself and loses track of time)
Classic (worst case) example is starting dinner at 7 pm, when I arrive home from work and the kids start in by mentioning they are hungry, -- then choosing to make meat loaf, for the first time ever, by looking for a recipe before taking the meat out of the freezer, we ate at 10 pm that night, on a school night. Kids went to bed at least 2 hrs after their bedtime.
If anyone knows of "cooking basics" that a science guy may enjoy, so his wife does not have to mention anything - please please add your thoughts to this.
At this point, I choose my commentary to him, and try to remain happy that he is not choosing take out or heat and eat meals.
He does have a few meals that are good, and cost effective, that I compliment him on.