While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
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I borrowed a copy and for the life of me couldn't get into it. It was the most disjointed poorly organized volume I ever tried to read....but it's the only one and has all the pertinent info. Dave
For a bit of a cheaper perspective, There is the Pamphlet "A question of confidence", published by Service publications. It is somewhat negative, but an interesting read nontheless.