That's how the first User-Guide came about, almost an entire decade ago. (Time sure flies!) New owners kept over-thinking things, oddly many making the same assumptions and asking them over and over again. It was like a right of passage or something...
Actually, they left it open for us to write our own... discovering how much of an empowering experience it was when we joined together to help each other out. I'm working on the second-edition for our model now. Here's the current one: John's Stuff - Toyota Prius User-Guide Here's the one for the Iconic model, which obviously has a lot more content, having many more years to share & document: John's Stuff - Toyota Prius User-Guide