Information on Luftwaffe bomber crews and tactics during Battle of Britain

[Dan History]

Dear members,

I am in the process of writing a magazine article discussing the activities of the Luftwaffe bomber force over Britain in 1940-41. I have a large amount of information to hand, but I don't have enough detail on the following topics that the magazine would like to have covered:

a) The training and societal background of bomber crew members
b) General information about missions flown, including take-off times and length of sorties
c) Tactics - the combat formations used, as well as the bombing and target marking techniques employed

Can members suggest accessible sources which contain this information? My article is intended for the educated general reader of military history, rather than Luftwaffe specialist, so the requirement should not be too difficult to meet.

Regards,

Dan