What Iddee said.
I will add to that a little... Unless the bees you bought are excellent Hygenic bees that CAN survive on their own, the swarm will find a new home, in a neighbors eve, or barn, or old car etc... they will grow, and MAY even swarm again, but within a year or two, the mites will build up, and eventually kill that hive. the bees will abandon the hive and find another place to go, possibly back to YOUR queen right hive, with a full load of Varroa mites clinging to them... This is a worst case scenario, but is possible...
None of us want our bees to swarm, we prefer to keep them all happy and healthy and making honey or more bees for us, but it DOES happen, and it WILL happen.
When you first start out, information overload is HORRIBLE while you try to figure everything out.. Trust me, when I say, it will get better as you go! Before long, you will be looking forward to doing MORE with your bees, splitting them, making queens, building a queen castle etc, etc... Go easy, and just do your best. Follow basic swarm prevention, and if they swarm, then they swarm...
In the first year, a swarm is not likely.. the queen is young, her pheromone is strong. it is possible, just not likely, so try to relax and enjoy your bees the first year!