This is the main site for most Winnie:
From there you will need to drill down to get to the specific model Brave, Navion, and then 24F but once there you can find tons of info from pictures to diagrams of where things are located and even down to where the wires for different items run through the unit. Be aware that options matter and you may not have all the options shown on the diagrams. But you CAN look at lots of info and read through the owners manuals.
Depending on your interest and what level of work you want to do, you may want to print off some of the basic things like where the waterlines go?
Good luck and come back with any questions as this is always a new project when we switch and the first is the hardest.
Simple things are different in RV. Things like knowing to wait for the fire to light in the furnace can be a real headscratcher until you get used to how things sound/act/ react when you try to use them, so take it slow and be ready for some questions!