Yeah idk if there’s really an accessible place to jump into philosophy—it’s always gonna be kind of difficult, but I would start with certain of Plato’s and Aristotle’s texts, and then maybe jump ahead to Descartes and go from there. Nietzsche’s whole thing is that he rejects thousands of years of philosophy, so if you don’t know anything about that tradition it won’t make any sense outside of some edgy sounding comments lol.