Look also this incredible tutorial who show how use directly Nurbs on the creative project! And utility to have some colors in the 3Views :)

By Cristobal Villa
http://www.etereaestudios.com/docs_html/nixus_htm/nixus_makingof_mp01.htm

here the blue prints for training!
http://www.etereaestudios.com/docs_html/nixus_htm/nixus_blueprints_index.htm