Some really good sites for Winnebago info.
Start there:
https://www.winnebago.com/
Hit owners at top right and it gets to a list of things like owners manuals, etc, etc
Lots and lots of good info if you chase down through the list.
If interested in a shorter path go this way:
Parts to see how things might come apart and to get parts numbers if you need something:
https://catalog3d.winnebagoind.com/menu/Parts.htm
Plumbing to see where and how that fits in and what to expect:
https://www.winnebago.com/Files/File...m/Plumbing.htm
Wiring diagrams, some great, some not so much. Older Rv get more info if before 2010 model.
https://www.winnebago.com/Files/File...ram/Wiring.htm
First thing to impress me was just how MANY different Winnebago there are out there!!
First thing to sort is if the year of the coach is the same as the model year of the chassis as they often buy a bunch of stripped chassis but it may take until the next year to get an RV built on top, so if looking at inside stuff, it takes that year but if needing brake shoes, it may be the year older.
Check the label next to the driver for the correct date, etc. ??
Good luck on the trek!