Principles of Microeconomics has been thoroughly revised, simplified, and updated for the Fourth Edition.
Co-written by Joseph Stiglitz, winner of the Nobel Prize for his research on imperfect markets, and Carl E. Walsh, one of the leading monetary economists in the field, Principles of Microeconomics is the most modern and accurate text available.
This is a pretty authoritative book on the topic. We used it at the University of Waterloo when I was there a decade and a half ago. I learned a lot from though book, though I would have written it to be slightly more accessible. I had an easier time reading Gregory Mankiw (never had to re-read), but it was for the topic of Macroeconomics. Maybe macroeconomics is easier...? There are other sources out there these days like Khan Academy to make comprehension easier, back in the day I literally was taking notes paragraph by paragraph. Can't complain with a 92, but it was hard fought. Super useful information though, I think everyone should take economics, it really helps understand the world, people, systems, and optimizes personal decision-making.