Category 1 – Books that you want to read
This includes anything you want to read because you enjoy it. No one can tell you what you should enjoy reading, it’s entirely up to you. Do you love romance novels? Then read those. Do you love comics? Then read those. Do you love action thrillers? Then read those. Do you love books esoteric philosophy? Then read those. Do you love classic English literature? Then read those.
Read what you want to for fun, because life is really quite short and moments of pleasure are fleeting.
Category 2 – Books that help you improve some area of your life right now and/or assist in your understanding of the world.
This can vary considerably depending on where you are in life. I frequently acquire books that I am going to read much later because I know that they aren’t applicable to me right now.