I am introducing my new relatively simple beginner level training titled "Gears of Houdini"
Its main purpose is to create a fully parametric custom gear and then convert it to Digital Asset.
In the second part of the training we look at how to animate the Gear and also create custom materials for it and finally light and render the Gears.
Custom materials include a Plastic and Metal Shader which use the Occlusion node to add dirt.
Training is now available.

Trailer
Link
http://www.rohandalvi.net/gears
Other commercial training
http://www.rohandalvi.net/commercial/
I am also putting link to some of my free tutorials.
Packed Primitives in Houdini 13 - Part 1 & 2
Introduction of Houdini 13 Particles
regards
Rohan Dalvi
http://www.rohandalvi.net/