My Mk2 sits in the garage most of the time. It's always plugged into a battery conditioner. I keep very little fuel in it, so that when in does get filled up to be used, the stale fuel gets really diluted. If I'm leaving it for the winter 6 months when it's not taxed, I'll pump the tyres up to 40 odd psi so they keep their shape. I've got a note on the dash to remind me to let some air out before I drive it. As said before, don't leave the parking brake on.
To be honest tho', there's little point in keeping a newish car parked up. Unlike my Mk2, yours will be just sat there loosing money, only benefiting the next owner.