A neat little freebie from BIM Stop... It's worth checking out...
This new interactive guide to BIM works on iPads and iPhones, and contains amazing dynamic content such as interactive 3D building information models and BIM objects. Here’s some screenshots from the interactive book app, once again we’ll be updating and adding to it regularly along side our PDF version.
The Revit Kid.com! by Jeffrey A. Pinheiro is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at The Revit Kid.com.