The Feynman technique is very effective. At the end of each chapter/section, write a one page summary, in as simple language as possible, to teach a hypothetic

The Feynman technique is very effective. At the end of each chapter/section, write a one page summary, in as simple language as possible, to teach a hypothetical new student what you just learned. Even better if you can then compare what you just learned to other things you know to clearly separate them in your mind.