I recently discovered an interest in philosophy, and found this book a great introduction. There's lots of different types of philosophy - maybe you're interested in what makes a government good, or maybe you're more into the whole "what is reality" part of it - and this book provides an introduction to the different types, as well as the major philosophers from the last 25000 years.

https://www.amazon.com/Philosophy-Book-Ideas-Simply-Explaine...