You can use this to help him behave. WHY he can't behave in certain ways. Research shows this really helps. Baby's memory is not as good as yours. Don't expect him to learn to stay away from dirty slippers or hot stoves just because you tell him a few times.
Children can be very different from each other.
Then you can encourage each new ability. I hold onto a toy, such as a rattle, for several minutes. I pick up small things like pieces of string. I still babble a lot, and shout to get attention. I may recognize some words.