Yes follow Junkman's tips on how to wash it.
On a new car I would do a one time wash with Dawn just to strip of whatever might be on there.
Feel if the car needs any claying, again just click here:
All About the Claybar Process, Junkman did a very detailed write up about it.
Though for the actual technique you can go a little lighter then Junkman does. His way is very effective, but if it's the first time your claying you might want to take it a bit slower to make sure you don't do anything unwanted to the paint.
Then see if your car needs any polishing to get out any swirls or minor scratches that the dealer might have put in there.
If so polish them out (research your products for the job here).
Then I would (did) clearbra the car, but that's up to you.
And then add some sealant/wax to finish up the job (again look around the internet to learn about all the different ones available).