I read +50 books/yr and I use highlighting to help me retain the most material. Highlights help in so many ways: they are physically attached to the material, i

I read +50 books/yr and I use highlighting to help me retain the most material. Highlights help in so many ways: they are physically attached to the material, it gamifies the reading process as you chase the next highlight, and you can easily skim past highlights to help you pick up a book you didn't finish or just to review the best parts. After I've finished a book, I translate those highlights into written notes on my blog. Last year I consulted a reading specialist on retention and they said this process is also what they recommend.