I recently re-read John Kenneth Galbraith’s book “A Short History of Financial Euphoria”. While it was published in 1993, it is as valid today as it was then. It is a quick read with at 110 pages of larger print.
While you don't have to have a formal education to be educated, you do have to be well-read. Traditional reading is picking up a book, but with apps today, I often listen to a reading of a book through an app.