Categorize it- which sector of your life does the information apply to
Write it down- can save in in a word processing document, or have a binder or notebook with categories for organizing your information
Apply it- if you're going to use it in your life right away, make the structural/administrative changes that use that information
Review it- weekly or monthly, select the most important insights of that period and mark/highlight them. You can make a consolidated list of the most important points at that time.
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It's kind of like learning things in school, but now with PD information for optimizing our lives. It helps a lot to have a system for organizing and applying the information.