I have a Second Edition May 1968 copy which I got as soon as it came out at the start of my career. Sadly, 50 years later, my flying days are now over, but I keep dipping into it for Mr Davies excellent explanations of all sorts of aspects of handling big aeroplanes illustrated with simple diagrams and graphs. It's a must read for all aspiring transport pilots, but will not help with ATPLs.
Regards,
mcdhu