Use the Pomodoro Technique.

By breaking down your reading into 25-minutes chunks, followed by a 5-minute break, you allow for the effects of primacy and recency. You can sustain focus without interruption or distraction.

This will improve your memory of what you have read. But the Pomodoro Technique is also very effective for any other task or work project. It will increase your productivity and keep your energy focused on the job at hand.

1. Set a timer for 25 minutes and concentrate solely on what you’re reading.
   This means zero outside distractions.

2. At the end of the 25 minutes, take a 5-minute break.
   This is when you can check your phone, emails, etc. Each 25 minutes chunk is called a Pomodoro.

3. After your 5-minute break, and before you start your next Pomodoro, write about what you learned during those 25 minutes. You cannot consult the book; this writing should be from memory.

4. Repeat steps one and two for each Pomodoro.
   You can modify the approach by writing down what you’ve learned after 3 or 4 “Pomodoros” instead of between each one. What is most important is to give each Pomodoro your complete focus without distraction.