I do my own hatching as well as custom hatching. I keep the temp at 98.5. It can vary a degree either way. I highly recommend a fan in your incubator. I know Murray McMurray sells these very reasonably and the forced air dramatically increased my hatch rate (most often 100%). Also with these incubators there are like ditches you fill, and they control the humidity in your incubator ~ very very important. I RARELY open the incubator when chicks are hatching. It causes a decrease in humidity when it is needed most, and negatively impacts the hatch. I wait until I have a bunch running around in there before I take out any, and then I get in and get out.
Chicks take 21 days, ducklings 28 days. Candle at 12 days and see what is alive. It will look like a lava lamp in the live egg ~ real cool! Take out what is not alive. Just use a flash light in a dark room to candle ~ you don't need fancy equipment.
A hen turns her eggs almost 100 times a day (who counts this stuff??). I turn for the first 5 days 7 times a day, marking x and o as was suggested. After the first 5 days turn 5 times a day (always an odd number). Some suggest not to turn in first 24 hours because the blood vessles forming are so fragile. I find you will have greater successs if you roll them carefully as opposed to not at all. Do not turn at all after day 19, they are getting in position to hatch and you will screw them up.
Mine go from the incubator to under a heat lamp. Watch them, if they gather under the heat lamp, they may be too cold. If they gather to the edges away from the light, they are too warm. You will be able to see when they are comfortable.
I hatch ducklings, pheasants, goslings, turkeys, chicks and quail. It is a great time!! It is like all things ~ the more you do it, the better you will get. Don't get discouraged if it does not work out as you hope ~ but the more you know ahead of time, the better you will do.