hi, to be able to properly begin reading aristotle, I think you should study:
- attic grk in the normal way (there are no chapters in particular of a normal attic textbook that you can skip simply because you will focus only on aristotle), plus
- in my opinion, if you plan to read the more theoretical works such as the texts of the organon, the physics, the metaphysics etc., a uni degree in classical philosophy (or have studied outside of uni the equivalent content of such a degree) – this might sound extreme, but in my opinion, just like any other field of study, understanding classical philosophy requires a fair amount of background knowledge and carefully reading aristotle without this would be like carefully reading a computer program without having a working knowledge of computer programming (which i definitely don't and wouldn't attempt to read a computer program) or carefully reading a law or legal judgment line-by-line without having a working knowledge of the legal system in which that law operates. i'm sure that others would disagree with me here and would say that a good commentary on aristotle will give you enough background knowledge to understand the text.
you can generate vocab lists for some of aristotle's texts using perseus' vocabulary tool (http://www.perseus.tufts.edu
), but the dictionary entries this produces will not really give you enough detail to understand the concepts, e.g. the LSJ article "ἐντελέχεια, ἡ, (ἐντελής, ἔχειν) full, complete reality, opp. δύναμις… distd. fr. ἐνέργεια, actuality, opp. activity" does not really give you enough detail to understand the underlying concept; furthermore such an automatically generated list would leave out important multi-word expressions such as τὸ τί ἦν εἶναι. instead i think you should track down aristotle-specific dictionaries which discuss in detail the concepts reflected in aristotle's vocab.
once you have a grasp on the concepts, aristotle's style in his extant texts is dense but is generally easier to read compared with the styles of many of the other major attic authors. cheers, chad