OpenSCAD! http://www.openscad.org/documentation.html
It might not be where you end, but it's a great place to start. (fwiw, I do all my 3D design with OpenSCAD. Been using it since 2011.)
It might not be where you end, but it's a great place to start. (fwiw, I do all my 3D design with OpenSCAD. Been using it since 2011.)