At a CRMUG Meetup in Melbourne Australia late last year I conducted a quick overview of my AppSource experience.
The material may be a good starting point to look over for those starting out to get a feel of some of the publishing concepts and considerations.
While this is high-level info (and without my witty commentary may be less useful!) I hope it is of some help.
I plan to add much more content around AppSource publishing this year so stay tuned.
Also check out the new LinkedIn Group: AppSource Alliance
Download PDF via DropBox: