too many things to list.
I beleive when a person dies they get use of other senses or abilities that we are not aware of or unable to use in this existence, and that includes much more awareness of knowledge and understanding of things, all part of shalom=completeness=not lacking anything, curtesy of God.
I believe even if a person rejects Jesus on earth and God doesn’t allow them in heaven they still have all that awareness, knowledge etc, but their experience of it is not wonderful as heaven would be.
I think when people get to Heaven, they are no longer concerned with what happens on Earth.
They are now dealing in the absolute Ideal of what they only saw ‘through a glass, darkly’, before.
I suspect that’s pretty absorbing. They are learning the realities of what they only knew as representative shadows, on Earth.