First, CONGRATS ON YOUR DESCISION TO HATCH CHICKS!!!!!!!!
some do's and dont's about incubating:
1) keep the temp of your incubator around 99 degrees if you are using a forced air incubator
2) keep the temp around 100-102 if you're using a still-air incubator
3) turn the eggs at least 3 times per day
4) wash your hands before and after touching the eggs- you dont want bacteria from your hands getting in the pores of your eggs
5) if you can, find some copper and put it in your bator. pure copper is very efficient and fast at killing bacteria and keeping it at bay while you are incubating (i found this out myself during my last incubation and lots of research)
6) keep the incubator ventilated. the growing chicks still need oxygen, and will begin to need a lot more beggining at day 14 until hatch.
7) try to keep the temp stable- a few short temp spikes will not hurt the eggs but a dramatic temp change for hours at a time can do some damage
8) be VERY careful with the eggs during the first week of incubation. the embryos are very fragile at this stage
9) during the hatch, make sure there is PLENTY of ventilation and the temp stays at around 98
10) keep the humidity around 50% for normal incubation during days 1-18. if you do dry incubating, keep the humidity at 20%-40% (i found dry incubation worked much better for me)
11) the humidity during hatch should be 65%-70%
12) try not to open the bator at all during the hatch
GOOD LUCK!!!!!