When you get them, open the package and unwrap the eggs, then let them sit overnight to "rest." If you don't have your incubator set up already by then, set it up when you get those eggs, and let it run so it will stabilize and get ready for you to set the eggs.
Get yourself a hygrometer ahead of time and calibrate it, too, so you know whether it's accurate or not, and how much you have to adjust for it, if it is not.
Do NOT candle those eggs excessively. I only candle on Day 10 and Day 18, the day I lock down the incubator for hatching.
Understand that a 50% hatch rate is GOOD for shipped eggs.
Others may give you more tips, but this is a start.
Oh..... and also understand this is addictive. All it takes is one chick emerging from an egg to start it.