Constantine R. Campbell. Advances in the Study of Greek: New Insights for Reading the New Testament. Grand Rapids: Zondervan, 2015.
Many modern grammars seem like they are stuck in the late 1800s or early 1900s, and Con Campbell skillfully explains how Greek grammar has advanced in the last hundred years or so. Topics he addresses include linguistic theories, lexical semantics and lexicography, deponency and the middle voice, verbal aspect and Aktionsart, and discourse analysis.
This is more advanced reading, but you should be able to follow most of it if you’ve had at least three semesters of Greek.