Bestselling author and podcaster Tim Ferriss reads 1-4 books every week.

Here are 10 of his reading rules:

1) Be ruthlessly selective.

"It's now 80/20 for me—what you read (being effective) is much more important than how much or how quickly (being efficient) you read." Tim tends to only read books recommended by people he respects.

2) Read for action, not just information.

"You read a book. So what? How will it affect your behavior or your beliefs or actions?" Tim always looks for steps to implement the information he's discovered. Inside the front cover of the book, he creates a list with possible next actions so they don't get lost in all the notes.

3) Create your own index.

"Information is useful only to the extent that you can find it when needed." Tim writes page numbers with brief descriptions inside the front cover of every book. This lets him refer back and review key concepts without rereading the entire book.

4) Take multiple passes.

"A day later or a week later, I will go through and 'star' a few entries on my index, and a week later, I'll circle or box or highlight." This helps Tim identify which ideas he's found most useful repeatedly, distilling the best of the best.

5) Reread the books that have helped you.

Tim rereads books like "Meditations" by Marcus Aurelius and "Radical Acceptance" by Tara Brach instead of chasing new ones. He avoids what Nassim Taleb calls "neomania"–an obsession with the new.

6) Seek "Just-In-Time" information.

"Focus on just-in-time information instead of just-in-case information. Seek what you need, when you need it, instead of stockpiling decaying memories." Stop hoarding information you might never use.

7) Quit books without guilt.

"Being able to quit things that don't work is integral to being a winner." Tim gives books a chance to win him over. If it's not working after a few chapters, he moves on. Life is too short for bad books.

8) Take structured notes.

"Consuming a ton of information is recreation; it's not retention." Tim takes notes even when reading for fun because there is value, even when reading fiction. Notes help him review a 10 hour book in 10 minutes.

9) Balance speed-reading with slow-reading.

"There are also books I'll savor for weeks, reading a small chunk at a time, like the poetry of Naomi Shihab Nye or Walt Whitman just before bed." Not every book should be speed-read. Some deserve to be savored and read slowly.

10) Read across genres.

"I liberally borrow from nonfiction to think about imaginary worlds and fantasy, and I will also borrow liberally from fiction, say Dune, and try to copy and paste lessons learned about leadership." Try something new today. The best ideas come from unexpected places.