What is a NUC you ask?
"Nucs, or nucleus colonies, are small honey bee colonies created from larger colonies. The term refers both to the smaller size box and the colony of honeybees within it. The name is derived from the fact that a nuc hive is centered on a queen, the nucleus of the honey bee colony". -Wikipedia
Basically, a NUC is 4 frames of bees, whereas a hive can hold up to 10 frames of bees. You will install your 4 frame NUC of bees into a hive box with 6 empty frames and watch the bees populate the 6 empty frames. It's an amazing thing to watch and a great way to ease into the beekeeping hobby!
The NUC is a temporary home for your bees. If you leave your bees in your NUC for too long they will swarm!
Once you get home here are your installation instructions.
If you are installing your NUC frames into your hive body right away, leave the green disc untouched. If you are leaving your bees in your NUC box for a day or so, turn the green disc so the large hole is aligned with the hole in the NUC box. This allows the bees to take a cleansing flight. You do not need to adjust the white discs, whether you are installing or not. Those are simply used for air flow in the NUC.
I do not suggest feeding your nuc at this time. There is a frame of honey in there for your bees to eat.
Your hive box will have 6 new, empty frames in it. Please make these empty frames be the outside frames of your hive box, leaving the middle open for your nuc frames to fill up.
Weather permitting, (at least 60 degrees and not raining) Start removing the outside frames of your nuc into your hive box, making the remaining nuc frames easier to slide around.
Locate your queen before you start to remove any queen cells. Once you’ve found her then remove all queen cells.
Install your nuc frames into the hive box in the same order in which you removed them.
After you’ve transported all your nuc frames into your hive box, move the nuc a few feet away from the hive and leave it alone. Any remaining bees will find their way to their new home eventually.
You can now feed the bees. I recommend sugar water with a recipe of 2 quarts of hot water mixed with 4lbs of sugar. Wait for it to cool before feeding.
Congratulations, you now have a new beehive!!