On this site is a long list of app settings and editing features called Cheatsheet. You will want to look at the information provided as a starting place for using Camera+2, ProCamera, Obscura and others. The editing features section lists the apps by technique. This webpage should change each time an app is updated but probably gets reviewed just before the semester begins.
If you do not find your workflow represented or your favorite app's features are missing in the details on this page, email me the specifics.
The most useful way to view the tips page is in Safari's Reader view and use the Find search field to target the references or hints.
