I've always bought new cars and scooters so I've done a lot of 'running in' and some of the information out there is a bit out of date. Apart from going a little easy for the first few km I just drive/ride as normal and try to do a fair bit of acceleration / deceleration (hills are good) to bed the rings in. Maybe not quite 'ride it like you stole it!' but don't go too easy on it, you will have a stronger motor if you load it up a bit.
As far as oil changes are concerned I did the first one at 500km, then 2500km and each 2500km after that. Personally I think that's a bit excessive, my PCX had 4000km intervals and I used to do that every 5000km, but oil's pretty cheap and it doesn't hurt to do it a bit more often. I use Valvoline 'Engine Armour' 10W40, no harm in using motorcycle oil but it's really a waste of money, it's only needed if you have a wet clutch which scooters don't have of course. For scooter engines a good quality automotive oil is every bit as good and works out a lot cheaper.