When I think of Cinema 4D, I think Cornelius Dämmrich. Cornelius is an artist from Germany, his skills and artwork with Cinema 4D makes him exceptional and thus qualifies him to teach on the subject. He’s released a new Gumroad tutorial for artists who’d like to get an insight into his workflows and techniques. The tutorial contains 3 videos with audio commentary as well as 6088AD scene files and a comprehensive time-lapse.
Source: Cinema 4D tutorial