5. Introduce the information to others.
Experts say that, if you want to remember what you experience, it's important to do something with that information.
Two Quora users listed talking about what you read as a useful means of processing new material. Venkatesh Rao suggests blogging, or otherwise trying to explain to others what you think you've learned.
Plus, if you find that you can't explain it, you might want to go back and reread.