The November Annual 2010 contains a detailed mapping guide on drawing city roofs and roof frills, example symbols and a new basic city template and style useable without City Designer 3.
The mapping guide takes through the important City Designer commands for creating buildings in your city and offers a variety of options on how to individualize houses once they have been placed. Even without City Designer 3 you can make use of a large part of the included material.
The tutorial pack City Roofs and Frills includes