New Engine on order!!

So just got the phonecall from Mazda, they have put an order in for a new engine!! They said it should be put in and everything by the end of next week! Just wondering, I've read post on different "break in" procedures and everything, and still dont have the clear answer. Since I will be the first owner on this engine, and I absolutely love this car and want it to last as long as possible. How should I go about the first couple thousand miles??