Use the Feynman Technique: teach what you learn to someone else to identify knowledge gaps.

Take brief notes after each chapter. Summarizing helps cement knowledge.

Organize books by color for visual appeal or by genre for practical access.

Create a dedicated reading space with good lighting and minimal distractions.

Write documentation as if the next person reading it is a violent psychopath who knows where you live.

Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds.