[nerdponx]

Not sure I agree in general. Grinding through hours of research and teaching yourself things from scraps of info is a lot harder than reading it out of a well-structured book. Can't speak for this particular domain but I certainly would appreciate a coherent resource.

[nothercastle]

Yes but unfortunately things change pretty often so idk how you keep everything up to date in a book. Leases need a calculator to compare and reliability and depreciation estimates are also dynamic. You could have a website with a subscription but people hate paying for those.