after you get acquainted with the interface and basics, check these out.
cg wiki the best resource.
By Matt Estela. Here’s a talk from him about how to learn houdini and why you're doing it wrong.
Good video tutorials, these guys do some nice deeper dives on vex too
John Kunz does incredible streams every week on twitch and posts vods on youtube. Great resource for FX, coding, and more advanced stuff, as well as lighting and rendering with mostly redshift.
more advanced design / mograph oriented stuff. Very popular. They cover some unreal and blender / other workflows too and are generally geared towards advanced CG. They also have a patreon with a series on “adding houdini to your arsenal” (so probably a decent starting place if you’re coming from other apps, esp c4d).
https://www.sidefx.com/tutorials/
There’s a lot of stuff on the actual sidefx site. Of course!
Awesome setups and hip files from Johnny Farmfield