Mauriccio Torres did 4 introductory videos on the fundamentals of working in Houdini for 3D artists.
Mauriccio Torres uploaded 4 1-hour-long videos covering up the fundamentals of Houdini workflow specifically for 3D artists.
In Part 1, Mao gives a brief introduction to the software, explains the Houdini Node approach, the nodes structure and hierarchy as well as the interface.
The third part unveils the noises approach with a discussion of different types, using different inputs and working with attribute nodes.
The last piece will guide you through mesh cutter techniques, go-to nodes to use for it, adjusting the curve normals, and adding geometry to the curve. In the end, you can also get a few tips on the workflow.