We all feel the pain of being totally new to the RV world, as we were all new at some point. But now the new folks have lots more help thna even 20 years ago as so much is put online! And Winnebago does one of the best jobs of getting that info online for the motorhome group!
So maybe pointing out where to access all that info?
Winn home site:
https://www.winnebago.com/
I like to go to the owners tab at right side which takes you to a second site> that second page has a tub full of great info under the tabs at the left.
Owners manuals are often a place to start if you get the specific one for your RV but then there is a lot more info if we go further and look at a bunch of the diagrmas, etc.
One great one that I love is the interactive "parts catalog", not so much to order parts but just to look over what we bought and where they put a lot of stuff like the plumbing drains?
At the moment it seems to be down which usually means site maintenance and it should be back up shortly
https://catalog3d.winnebagoind.com/menu/Parts.htm
I like that one because I can see a lot of stuff like where the tanks are as well as have a list at right to tell me details like what size tanks, etc.
Do some looking and it can head off some real headaches when you get a better feel for what you have?
Best of luck in the new venture. Enjoy!