The Great Courses: The Achaemenid Empire on Sale

Achaemenid historian John W.I. Lee did a series of lectures for The Great Courses. Right now they have a closeout sail for the DVD editions including his series on the Achaemenid Persian Empire. If you like long-form video as well as short blog posts you might want to check them out! Whereas sites like YouTube let anyone post and share whatever gets clicks, The Great Courses gets recognized experts and skilled public speakers to teach on their area of expertise. One is educational, the other sells eyeballs to advertisers and does not care whether the eyeballs look at rants about flying saucers or careful research.

https://www.thegreatcourses.com/courses/the-persian-empire

They also have other series including one by Greg Aldrete (sorry, glued linen armour was made up in the 19th century by people misremembering translations of bits of different medieval and ancient texts, but I bet he is an engaging teacher).