Welcome aboard whompa.
Is it your first Harley? Asking more around the process for using the Stands etc, which can differ to Jappa bikes.
yes first one. I left in neutral so rolled forward a tad.
I always leave my bike in neutral. If your shed or wherever you leave it parked isn't a flat surface leave it pointing up the incline.
You'll get your tank all sorted and you will have lived & learnt (live to ride - ride to learn)!
That depends on the bike. Modern ones have a neutral cut-out switch, so it's safer to leave them in gear.
Yes, aware of that Ross, the neutral-interlock switch is just another component to fail & leave your in the 'lurch', so to speak.