Agreed....with Cerbera leading the list.
Some YouTube sites to visit (if you had not visited them already):
First up, the Core4D Youtube channel. Many playlists, but here is the one on modeling
Next, some very good channels by Core4D regulars:
Digital Meat
Wolf 4D
3D Fluff
And rounding out the list:
Polygon Pen
Other more well known C4D channels that cover a bit of everything:
Rocket Lasso
School of Motion
Noseman (or Anthanasios Pozantzis)
In no way a complete list and I definitely missed some really great tutorials put out by C4D legends as I put this list together pretty quickly, but this should get you started.
Dave