Caligari Corporation (acquired by Microsoft in 2008) created a 3D modeling software application called trueSpace. The VMK in this section will familiarize you with the software's user interface so that you can create 3D models, apply and change material on your models, and work with textures.
Microsoft released the full version of trueSpace for free, and then discontinued the software in 2009. You may still be able to find it for download somewhere online. See Wikipedia for details.