We've been adding in tutorials for some of the features in "SiN Episodes: Emergence" over at the wiki.
Please feel free to give us feedback/corrections/updates.
Tutorials to date:
Making Your First Arena Mode Map
Making Grunts Rappel
Making Jessica drive a vehicle
Making Sure Your Level Works in Germany
Using Jetpack Grunts in your maps
Using "Info_Challenge" entity in Arena Mode maps