Go to www.schroff.com
Invest $35 for the following two books
Residential Design Using Revit Architecture and Commercial Design Using Revit Architecture.
They are great introductory step by step tutorials that show you clearly and easily many of the common procedures and concepts for creating a house or commerical building. I learned with them. See attached rendering that I completed after the reading the books.
Most people suggest the books by Paul Aubin. In my opinion, they are good books but full of a lot of in-depth information that is helpful after a simple tutorial and basic understanding of Revit is learned.
Good Luck......