Essential SAP reading

Have you read "The SAP Blue Book" by Michael Done? Did you find it useful?

Well, a sequel has been published "The SAP Green Book" which is apparently just as good, if not more so.

Josh Greenbaum is certainly a fan, and has written a glowing report .... based on both the quality of the book and the author's resemblance to the cigarette smoking man in the X-files!

http://www.enterpriseirregulars.com/EI/38348

Let us know whether you think this is "Essential SAP reading"...