At first, just enjoy playing with the styles and the sounds/sts's, just to get in the groove.
Then have a look at your global EQ settings, so you can create the sound setting which suits best to your taste.
It can make quite a big difference.
Then I would suggest to get familiar with the SongBook asap.
It's a great tool to manage your musical workflow.
Enjoy, it's a great sounding keyboard!
