I'm glad Steve and others are about the joy of cooking and not the precision of cooking. The sense of transient accomplishment is far more pungent and delicious than mowing the lawn.
Many of the skills take only a few extra minutes to do with grand results. I was briefly an Italian cook but never a chef with a myriad of techniques.
For those willing to devote the time to writing a cookbook I would like chapters on how to feed 20 or more or how to feed 2. Then instead of recipes a series of skills that would apply to many recipes at a time so people could mix and match.
Some-many failsafe recipes would build confidence and ambition.