Agree the manual contains loads of superfluous warnings, but that is just a by product of us living in a nanny state whereby every single little thing needs to be warned about, cautioned and explained in case someone decides to sue Mitsubishi because they didn't realise that following the Sat Nav and driving into a river was a bad thing, and this wasn't mentioned in the manual.
If you ignore (or skim read) the warnings then personally I think the manual isn't too bad, its pretty comprehensive and better than some I have had in the past whereby the manual has been very sparse on details.