Hello, do you know some kind of tutorials that will show me how to model 3d rollercoaster in houdini ? In the future I'm going to create game in unity 3d that will support oculus rift and give the chance to ride rollecoaster

, but i don't know how to create a rollercoaster by using procedural technics

. There are some tutorials on youtube but only for 3dsmax

.
I know good site :
3dbuzz.com, and there are some good “procedural modeling” tutorials. Do you know another good sites with houdini tutorials ?
Cheers!