To grok the subject, it will take a while. Search for a good undergraduate economics course and follow that. I second Hazlitt "Economics in One Lesson". But if

To grok the subject, it will take a while. Search for a good undergraduate economics course and follow that. I second Hazlitt "Economics in One Lesson". But if you truly want to understand this, you will need to start with one book and then note all the books and theories which come before, going back a long way 200 years or more. Read or read summaries of those as well. In that way, you will get a firm foundation and understand how some "new" stuff is just old stuff with a new name.