Be prepared for the huge cost of all those cleaning products, to keep your new mini looking nice
Take some time to go though the site, esp. the interior section.
Loads of post about little things you may not know otherwise, like
Headlight washes come on after the 3rd windscreen wash.
turning the engine off before the headlights leaves the lights on for a period of time (dealer programable) to give you some light to find your keys etc.
Holding the key in the locked position closes the windows if they are open (not sure about sunroof, dont have one).
Some of these things are model/year specific so check that as well (e.g I believe

, in later models you have to flick to main beam once the engines off to get the lights stay on for a bit)
Oh yeah, and you'll also find out that Mickeythemini is a God among Mini's, to be worshipped, with the occational sacrifice