Curiously, not a few individuals are realizing that their education (K-12 and even college) neglected to provide them with as much understanding of the world as they would like. At Intellectual Takeout, we believe that however you feel about your education, there is still much to be learned. To that end, we'd like to refer you to one book and a collection of "study guides" that serve as excellent docents for supplementing and building upon your education.
The first book is "The Well-Educated Mind: A Guide to the Classical Education You Never Had" by Susan Wise Bauer. The book is a helpful guide for picking up where formal education left off. Indeed, it not only picks up from that point, but also helps you cultivate a different approach and perspective to learning. An embedded copy of the first part of the book is available below. If you'd like to purchase it, you can do so at Amazon by clicking here.
The collection of study guides we recommend comes out of the Intercollegiate Studies Institute. Each guide focuses on a particular topic of interest, gives brief overviews of key issues within the topic, recommends different supporting books, and provides context for those recommendations. Once you click on one of the links below, you can order a copy of the guide. Additionally, several introductions to the guides are available for free online, just look for the following hyperlink below the cover image: "This guide is also available online."