Welcome to the forum. My suggestion to learn your rig is to learn one system at a time. For instance all the light switches, then the generator, then the water system, etc. Not necessarily in that order just don't try and learn everything at once so you don't get overwhelmed.
An Old Fisherman
2017 Nexus Ghost 36DS, 2004 Ford F150 Long Bed
2007 Harley-Davidson Ultra Classic