Draginol, welcome. You will enjoy your time spent on our forum, it is a wonderful, friendly place, full of good advice and excellent learning tools.
I am happy that you are starting out with two hives. This way, you can compare how each one grows. If you run into trouble with any queen loss problems, you will not be sunk. You can either requeen the one that ever lost it queen or unite it with the other one. Having one hive only is, in my opinion, not a good idea. Anyways, enjoy this forum, we all do. Have a wonderful day, great experience and fun with your bees, great that your son is in on it with you too!!!! Cindi