This video tutorial is a look at one of the basics of Houdini : Polygons - point, vertex and primitive data, smoothing and faceting, subdivision, removing inline points, orienting polygons and making polygons planar.
This video tutorial is an introduction to using attributes and local variables in Houdini. It covers:
Different types of attribute: vertex, point, primitive and detail;
When attributes and variables can be used, and when not;
Vector vs 3 value float attributes;
Converting between point and detail attributes etc.