Check out this link :
https://www.backyardchickens.com/a/hatching-eggs-101
Should be everything you need to get started.
X2 on the link. that is a great source of info.
The recommendation for setting gathered eggs is 10 days or less (age wise) is the best. Anything over 2 weeks old decreases the hatchability rate. A good share of people only use eggs within a week old. Yes, they should be stored at room temp, unless you have extrememly hot, or cold room temps, and should be turned during storage as you would during incubation.
I recommend using at least two thermometers in the bator, (never rely on one). Remember day one starts 24 hours AFTER eggs are set in the bator. Recommended temps for still air bators are 101-102 degrees. (Despite manufactor instruction.) Reccommended forced air is 99.5 degrees. If hand turning, more is better, but an odd number of times is recommended.
Usually if you have a question, someone on here will give you the info, or at least, their opinion...lol
My biggest piece of advise though, is everyone does it differently. There are very few things that is agreed upon as a majority. One person will tell you something is absolutely taboo, while the next person will swear that's the best way to do it. You have to find what is best for you. What works for you and what you are comfortable doing. A lot of times you only come by this by trial and error. And just about everyone on here has had their share of errors to get to their level of experience. So take people's advice, Listen to the differences and then use your common sense and what is doable for you and do it.
Good luck on your hatches and we are here to give our two cents when you want it...
