Congratulations! I bought a new Class C in February after camping for years in travel trailers. I confess I did not take proper care of my TTs through ignorance. I decided with the cost of this purchase that I was going to be Mr. RV and take care of this thing like it was my first born child. Therefore I have been reading and studying everything I can find on the internet.
First, you've found a great forum to learn! These folks know what's going on and have great advice. I have found lots of good information on YouTube as well. I have some bookmarked YouTube Channels that are especially helpful.
RV Walk-Thru is a good place to learn about specifics of systems on a coach. There is a guy named Mark Polk that has a
great channel full of good information especially for beginners called RV Education 101. (He sells training DVDs but there's really good stuff in all his YouTube content too.) One of my favorite RV YouTube channels is
RVTravel.com's channel. The first two are more methodically educational while RVTravel is more about tips, tricks, good places to go, and RVing in general.