The Right Weather. . . .

. . . . . . For a novice to open a beehive.

Warm and dry without much wind. All the flying  bees were out collecting nectar, pollen and anything else they needed, while the few left at home had no need to cluster over the brood to keep it warm. On such days the bees at home are few and well behaved so that the hive can be inspected with confidence by the tyro beekeeper.

The blip is my protégé for the year removing a frame of brood from the hive, there were three of them with similar amounts of brood on each side; I would have liked to see more but that is not bad, there's no sign of disease and the bees appear to be very happy bunnies. So what can we see here?

The large oval patch is cells containing pupating larvae, they have shut  themselves up in silk cocoons and the adults have sealed them in with wax cappings. They will spend about two weeks in this state before they emerge as adults.
There are holes in the brood which is very slightly worrying, it could be due to the queen being in-bred (that's a lesson in the sex life of the queen for another occasion) though it's more likely to be due to the comb being old and damaged; most of the comb needs replacing but we only inherited the hive in the autumn and haven't had the opportunity  to do it yet.
A lot of the apparently empty cells do have small larvae in them and there are a few at the top left of the brood where you can see  the white grubs, in about three days they too will started pupating.
The two yellow arcs near the top corners contain pollen (mixed with honey to preserve it), most of the spring pollen is yellow coming from, amongst other sources,  gorse, crocus, broom, dandelion and primrose.
I would also expect to see honey around the edges, but the bees are bringing plenty in at the moment and there are several frames full of last year's stores that they can use.