Going to the Wars: The Experience of the British Civil Wars 1638-1651 by Charles Carlton
An excellent book which describes the varied backgrounds of the men making up ECW armies - the raw recruits and the hardened European campaigners - and attempts to look at the struggle through their 17th century eyes.
This is a unique book. The amount of personal anecdote that the author has tracked down and wielded into a coherent book is truly astounding. His attempt to do a "Face of Battle" job on the English Civil War is by and large successful.
Free in UK
http://www.amazon.co.uk/gp/product/B000P0JN2Q/