https://www.tcd.ie/classics/byzantine/

Летняя школа византийского греческого от Тринити-колледж, учат дистанционно, διαδικτυακῶς.

Про произношение пишут так:

They are taught the modern Greek pronunciation, which is closer to the pronunciation of Greek in the Byzantine period than the Erasmian pronunciation generally used in teaching Classical Greek.