SketchUp continues to make slow and complicated 3D modeling a thing of the past. It's popularity and maturity has approached a level where we can accept user friendly, real-time 3D modeling and be critical about new capabilities and features. Narrated videos that cover everything from basic to advanced SketchUp topics can be found here. Recently conceptart.org opened it's own forum dedicated to this software, a place to explore the 2d/3d methods of making design.
free downloads! are available at sketchup.google.com
Create, modify and share 3D models at the 3D Warehouse.
A searchable, online repository of 3D models where you can find anything you need and share your models with the world.
Google SketchUp Blog