The only thing cooler than struggling through the Fathers in Greek and Latin is struggling through the Scriptures in Greek or Latin. If you’re interested in learning these mother tongues, check out Textkit.
It’s a collection of good, clear PDF files of old (out-of-copyright) Latin and Greek textbooks and grammars. There are several introductory Greek books, along with keys to the exercises. (You have to register for the newsletter to get the keys.)