The most comprehensive description of South Caucasian archaeology by Antonio Sagona. From Paleolithic to Iron Age

 The most comprehensive description of South Caucasian archaeology by Antonio Sagona. From Paleolithic to Iron Age.

This book is a must read for those who want to better understand the deep history of that region. Also with the advent of paleogenetics it becomes an indispensable source of information for interpreting the DNA results.

Some Sagona's ideas are not confirmed by aDNA. Like the Samtavro culture in Georgia is not exactly the same as Lchashen. Also he was sceptic about Steppe migration in Middle Bronze age ( see the attached excerpt ) but overall the archaeology quite well how Caucasian populations formed and evolved.

See the link in the comments.

PS regularly I will add other interesting links about the archaeology in this thread.