Here are suggestions for authors, the people who make lessons, and exercises. I wasn't sure how to organize this, so I borrowed something from one of my fave books on learning, Yana Weinstein and Megan Sumeracki's Understanding How We Learn. If you're going to read just one book on learning, this is a good choice. The authors are part of The Learning Scientists, a group of "cognitive psychological scientists interested in research on education." They do good work(s).

(I listen to their podcast while working out in VR. I hate exercise, but the podcast and VR makes working out... not good, but less suckworthy.)

Chapter 11 is "Tips for Teachers," organized around some important learning practices. Here's how they organize their tips:

Seriously...

... you should get this book. Short, pithy, easy to read, and great graphics by Oliver Caviglioli.

My bias

As I write about these, I'm thinking about geek skill courses, like programming. Adjust to your taste.