The first Bronze Age upheaval occurred in the Early Bronze Age, which ended the Akkadian empire in Mesopotamia and Old Kingdom in Egypt as well as settlements like Troy II. The second collapse, which occurred at the end of the Late Bronze Age, is much more popular and intensively studied.

Currently the best popular history of the LBA collapse is Eric Cline's 1177 B.C.: The Year Civilization Collapsed, which does a good job of collecting and discussing recent scholarly opinions. He discusses his book at the Oriental Institute in this Youtube video.

The bibliography for the LBA/EIA transition is extensive, as the topic has been researched ad nauseam in the last couple of decades. Some of the more useful general studies:

• The Aegean from Bronze Age to Iron Age: Continuity and Change Between the Twelfth and Eighth Centuries BC by Oliver Dickinson
• The Making of the Middle Sea: A History of the Mediterranean from the Beginning to the Emergence of the Classical World by Cyprian Broodbank
• Afterglow of Empire: Egypt from the Fall of the New Kingdom to the Saite Renaissance by Aidan Dodson
• Early Cyprus: Crossroads of the Mediterranean by Vassos Karageorghis
• The Philistines and Other “Sea Peoples” in Text and Archaeology edited by Ann Killebrew
• The Philistines and Aegean Migration at the End of the Late Bronze Age by Assaf Yasur-Landau
• Across the Border: Late Bronze-Iron Age Relations Between Syria and Anatolia edited by K. Aslihan Yener
• Empires after the Empire: Anatolia, Syria and Assyria after Suppiluliuma II (ca. 1200-800/700 B.C.) edited by Karl Strobel