This is a recent guide that attempts to cover everything in depth: https://members.delphidigital.io/reports/the-hitchhikers-gui...
6 karma · joined January 9, 2013
I haven't logged in in years, but this was so well done.
The nature of the program is that it is useful in that given a period of time, it can tell the user various statistics of their dealings. Target users would want to be able to generate this data at will, and so I don't think a subscription service would be useful.