A lot of professional 3D modeling work relates to architectural projects. For large scale developments, there is usually a site development or campus development element in addition to the buildings and other structures. Good site modeling is critical to creating an acceptable model for client projects because the environment needs to complement the structures.
This video comes directly from SketchUp & walks you through the steps to create a site model. Some highlights are how to use a mix of Google Earth & Google Maps views to understand the site; modeling new buildings from scratch; and creating utility scenes for studying.
You expect an official SketchUp tutorial to be pretty sweet and this one doesn’t disappoint. If you’re not into architectural rendering, then this may not be that fun to you, but I think most people doing models will appreciate the techniques and how he shows the capabilities of SketchUp.
If you haven’t already, then make sure you subscribe to the SketchUp YouTube channel.