Hey man how's it going? yea it was quite a fun project, not sure if i'm 100 percent done with him yet, he may pop in again in the future :D As for C4D i'm self taught too, i've been using for a few years now, as you said above i was doing it before work, after work, evenings and weekends, i basically modeled as much as possible.
Can't say i watched many tutorials, i watched one right at the start on the basics of the program but that's really about it, i was quite lucky to have a few good people from this community help steer the ship in the right direction, it wasn't until i started to delve into subdivision surface modelling , mainly concentrating on the character side of things that my skills really developed, once i grew an appreciation and understanding for the need for clean flowing quad based topology everything sort of just stated to make sense, fitting together like a puzzle almost.
Anything Chris Schmidt is worth a watch, usually anything gsg is worth taking in, there's also a handy holes tutorial on here in the downloads section from the former owner 3Dkiwi, it's a little old now but the principles are the same, Also users @Cerbera and @everfresh are some of the most knowledgeable guys i ever met, with decades of experience between them, so it's worth following them, and any advice they give, as it's 100 percent sound, usually ;)