My friend Alik just sent me to a pointer to a Survival Guide he is working on for the Azure ACS. The survival guide is intended to help provide a standardized means of organizing topics related to a particular domain such as access control. Looks like a good start for anyone working with ACS. Best part is that Alik is using the TechNet wiki - so if you have additional articles / topics that you think are relevant I am sure Alik would be grateful if you add them to the wiki.