How to read Aristotle
Aristotle is EXTREMELY difficult, if not unreadable, without a teacher. You should begin with ethics (it’s better to read Plato’s republic first and follow directly with Nichomachean ethics). Then you may go for rhetoric: Rhetoric and Poetics, those are easy readings.
Then, the natural corpus, especially Parts of Animals and On Generation and Corruption. Those are the ones that may — MAY — be read without a teacher, although arm yourself with a thorough background to avoid misunderstandings.
In any event, don’t read the Organon, this is really undecipherable without a teacher.
Between Physics & Metaphysics I’d say Metaphysics would be more interesting to begin with.
Anyway, τί ἐστι πολλαχῶς λεγόμενον.
The 3 absolute must-read for beginning philosophy:
Plato’s Republic
Aristotle’s Nichomachean Ethics
Descarte’s Meditations
Nichomachean Ethics is a sort-of response to the Republic. Both lay out two fundamentally different conceptions of the Good which are foundational to philosophy.