Suggestion for you ebook - 20 ServiceDesk Plus Hacks for Better IT Help Desk Management
In your guide, 20 ServiceDesk Plus Hacks for Better IT Help Desk Management, It would be good under each suggested 'hack' to denote which version of ServiceDesk it applies to.
For example, in one you reference the use of the Service Catalog, which is in the Enterprise version but not in the others. Granted it's an option for Pro, it would be better if the e-book noted the differences.