for Beginners: Books that explain basic concepts, philosophers, and theories in an easy-to-understand way. Ideal if you are just starting to study philosophy or want to get to know a topic easily.
Classic Texts: Books concerning original works by great philosophers, such as Plato, Aristotle, and Nietzsche.
Academic: Books for readers who already have a solid foundation in philosophy and want to delve into more demanding or specialized topics.