Please download these two files on to your laptop, they are very useful samples:
Also download this, it's a Stair crib sheet that shows what the parameters do:
http://davidddriver.com/Product/Freebies/Revit/Stairs_crib_sheet.pdf
Second half: Revit Phases
If you want to study beforehand, here are some descriptions of Phases in Revit:
http://revitclinic.typepad.com/my_weblog/2008/10/time-to-phase.html
http://www.revitzone.com/revit-fundamentals/62-phases-an-overview-of-revit-phases