Angie Taylor is featuring one free tutorial per week for the next five weeks on her blog. The first is Creating a Cityscape in 3D, which shows how easy it is to create graphics from scratch directly within After Effects, as well as how to create 3D environments and build scenes.
The tutorial was developed co-written with myself and my good friend, Paul Tuersley, visual effects artist and After Effects guru of the highest order. Paul has worked on various feature films including Kick Ass, Angels and Demons, and 10,000 BC. Paul came up with the initial idea to build a real 3D environment from basic flat layers within After Effects. This technique has now been used widely in a variety of different ways both in Motion Graphic designs and animation projects. Paul is also the moderator at AE Enhancers, a fabulous resource for After Effects artists that you should also check out.
You can find many of Paul's scripts at AE Scripts.