I bought the Cafe nodes training when it was there, and (could be wrong) it might have been on Youtube for a bit as well, as some of the recent Cafe training ended up there in 720p versions before they changed their mind.
Funny comment in the earlier thread
There was a guy online who had done a good long Scene Nodes video for Youtube then on his website he said that a full Scene Nodes training course was coming from him. I wrote to him, hey, can I buy it, etc. He wrote back, he wasn't going to bother recording any further videos on it until Maxon finished their development. This was something like a couple of years back, and a fair point as it's still in development and Maxon have done another UI change for it. Rocket Lasso does periodic videos with it, Noseman does videos for it, not many others. Tim Clapham did a video a few months back on Scene Nodes, below, and the comments below it on Youtube show that most people still haven't got their heads around it.
Sometime this year or next Maxon should just pay Chris Schmidt to do a Nodes from beginner to hero course, and either have Chris then sell it to make some more bucks, or put the whole thing online for free. Or, if they want, the Training Team could do a multi part series (like they do on Redshift, C4D, rigging etc) just on Nodes, here's how to get started. here's what you can do. And I appreciate a fair bit of this is already out there, but it's scattered all over. The learning process is part of what I want to see in any 3D app's ecosystem, Maxon are doing a good job with most other aspects of C4D right now, but the Nodes training for beginners isn't extensive.
My general guess is once that Scene Manager is done and they have their Object manager replacement there for everyone to see, we'll get more training showing us what's what, but I'd guess this would be in 2024 or later, would love to be wrong.