Put them in the egg cartons pointed end down like they said but you need to put something under one end or side of the carton so it is tipped an inch or so. Then once or twice a day rotate the carton. This keeps the yolk from sticking to the shell.
Room temp is ok, but some people keep them refrigerated at a constant temp as long as it isn't too cold. I can't remember the recommended temp.
Ten days is a little long for my satisfaction. I have kept eggs longer than that and some still hatched but I think on any eggs stored at room temp, you shouldn't keep them any longer than a week. i prefer five days.
Remember, the fresher the egg the better the hatch rate.