
Reading to Actually Understand

How to Read a Book: The Classic Guide to Intelligent Reading (A Touchstone book)
amazon.com
- Keep notes on what you read. You can do this however you like. It doesn't need to be a big production or a complicated system. Just do something to emphasize the important points and passages.
JamesClear.com • How to Read Better: 3 Simple Ways to Improve Reading Comprehension

Speeding up can actually help you to develop a rhythm, which will aid your concentration and, in turn, increase your understanding. Second, avoid back-tracking by telling yourself that you’re only going to read a sentence once in order to absorb its contents.