Thundering Zeus: The Making of Hellenistic Bactria by Frank L. Holt (1999). A good introduction to Greek culture outside of its traditional homelands, and more specifically Greek cultures of the Hellenistic era. Well researched, and highly current.

The Greek World after Alexander, 323-30 BC by Graham Shipley (2000). An introduction to the Hellenistic Period. For more in-depth detail, the researcher will still need to go to Peter Green’s enormous Alexander to Actium (1990).

A Companion to the Hellenistic World edited by Andrew Erskine (2003). A thorough guide with nearly thirty chapters written by world experts.
Alexander the Great in His World by Carol Thomas (2007). A fairly academic but very good biography of Alexander.

The Hellenistic World: Using Coins as Sources by Peter Thonemann (2015). An engaging look not only at the coinage itself but also how it can be used to inform us about the Greek world after Alexander.

Ghost on the Throne: The Death of Alexander the Great and the Bloody Fight for His Empire by James Romm (2012). One of the most gripping narratives of the political struggle among the Diadochi after Alexander the Great’s death. Follows fascinating characters such as the Athenian orator Demosthenes and the Greek scribe turned general Eumenes of Cardia.

The Last Kings of Macedonia and the Triumph of Rome by Ian Worthington (2023). A fresh and accessible look at the last two (three, if you count the dubious claimant Andriscus) kings of the Antigonid dynasty, which followed in the footsteps of Alexander’s Argead dynasty as rulers over Macedonia. It identifies its last kings as historical actors with agency, rather than tyrants waiting to be deposed, thus allowing the reader insight into facets of the middle to late Hellenistic period that are usually overshadowed by Rome’s role within it.