This is an old revision of the document!
Wikipedia entry, general information and many links
OPERATION BARBAROSSA: the Complete Organisational and Statistical Analysis, with lots of information of orders of battle
We've done a few reviews of books on the list on Goodreads, so follow the links if you want to read more. We'll be adding more reviews over time. Keep track of updates through twitter and facebook.
Christopher Bellamy, Absolute War: Soviet Russia in the Second World War
Martin van Creveld, Supplying War. Has a chapter on the logistical difficulties of the campaign
David Glantz, Clash of Titans
David Glantz, Before Stalingrad: Barbarossa, Hitler's Invasion of Russia 1941
Robert Kirchubel, Operation Barbarossa 1941 (1): Army Group South. Osprey Campaign series
Robert Kirchubel, Operation Barbarossa 1941 (2): Army Group North. Osprey Campaign series
Robert Kirchubel, Operation Barbarossa 1941 (3): Army Group Centre. Osprey Campaign series
Bogdan Musial, Kampfplatz Deutschland Stalins Kriegspläne Gegen Den Westen
Richard Overy, Russia's War
John Strawson, Hitler as a military commander
Gerd Ueberschär, Der Deutsche Überfall Auf Die Sowjetunion, “Unternehmen Barbarossa” 1941