Creating Simple Surfaces in Revit 2010

Creating Surfaces in Revit 2010 with dwg files

Survey Data in Civil 3D 2010

Global Mapper

Creating a Portal Frame in Revit Structure 2009

Revit Roof Types

Importing Sketch up models

In Autodesk Revit R9 and higher you can import sketchup models. There is a Google site (Google 3D Warehouse) that allows you to download sketch up models. (Link as below).
Revit Architecture 2008 will allow you to use the new Version 6 Sketchup skp files.

http://sketchup.google.com/3dwarehouse/

To import a sketchup model got to File and Import/Link Cad models. Don't forget to select skp from the type selector on the bottom. To add to the model or apply materials you will have to add this into a Mass first.