Both books are written for the same reader: the person responsible for someone else’s learning. Teachers, instructional designers, trainers, coaches, adult educators, prior-learning assessors, program builders. Many of them will never call themselves designers. They are.
They are numbered, but they can be read in either order and they do not repeat each other. The Good Learner is about becoming one. Good Learning by Design is about building the conditions so other people can. If you only want the short version of how they differ, skip to the comparison.
Neither book is on Amazon yet. When that changes, the buy link appears here. Until then this page says so plainly rather than parking a button that goes nowhere.