First, read this.
Texas A&M Incubation site
http://aggie-horticulture.tamu.edu/...e-Cartwright-Incubating-and-hatching-eggs.pdf
Then don’t stress out over any of that. Those are guidelines, not absolute laws of nature. You are not guaranteed absolute success if you follow all those perfectly. You are not guaranteed failure if you violate some, depending in which ones and how much. For example, turning them the first two weeks is important. If you incubate them on end, pointy side down is important. Storing them at exactly 55 degrees is not. Just don’t go to extremes either to warm or cold and you should be OK with that. Read it and pay attention, but then just do the best you can without stressing over it. You should do fine.
As far as the incubator, read the instructions that come with it. Put it in a stable place, where the temperature is not likely to suddenly change. Not in direct sunlight, not where you will be opening an outside door, and not in line with a vent. Then set it up and see what you get. Try putting water in different reservoirs and see what humidity change you get. Don’t trust any instruments that come with it. Get some good instruments and calibrate them. Get a thermometer that reads in tenths of a degree. That way, you can trust what you are seeing. Since it is a forced air, try to get it as close to 99.5 F as you can. If you are off a half degree, you are real close to perfect. If you are off a full degree, you should still get good hatches but if t is cool they will probably be late and if it is warm they will probably be early. That’s not really a big problem. They can be early or late even if the temperature is perfect. None of this stuff comes with any guarantees, good or bad.
Rebel’s Thermometer Calibration
http://cmfarm.us/ThermometerCalibration.html
Rebel’s Hygrometer Calibration
http://cmfarm.us/HygrometerCalibration.html
When you get the eggs, store them overnight pointy side down. That should help the air cell stabilize. Some people will tell you to expect 50% hatch rate with shipped eggs. I’m not one of those people. I’ve had 100% hatch rate with shipped eggs. I’ve had 25% hatch rate with shipped eggs. In general you will usually get lower hatch rates with shipped eggs, but that doesn’t come with guarantees either.
I know it doesn’t do any good for me to tell you not to worry. It is an exciting time and you will constantly be second-guessing yourself, especially your first time. I advise patience. Try to interfere as little as you can. Good luck!