I don't think the nature of Heaven can be understood by direct assault on the problem; but only via several prior stages of discernment.
Note: this is not what I myself did - my own procedure was much more haphazard; but it strikes me in retrospect that progress only occurred with a linear sequence of intuitive assumptions:
First we need to decide what God wants with creation, including why; and how this purpose relates to Man. In different words: where is creation aiming; and how do I personally fit in?
It is necessary also - either at this, or some other, point - to understand how and why the life/ death/ resurrection/ ascension of Jesus Christ was necessary to this aim.
(If Jesus is not considered absolutely necessary to God's plan for creation, then there is no compelling reason to be A Christian.)
Then we can move onto the question of what kind of Heaven God would want; what fits in with God's creative intent for Man.
At some such point; the focus can shift to yourself; and the question of what it is that situation you would most want after your death; especially if it is forever.
And only then does it make much sense to research the various Heavens that have been described through history - because only then will you have criteria to evaluate them, their coherence and believable-ness; and to exercise your intuitive discernment about which Heaven (or aspects of the Heavens described) is plausible and desirable.
In researching Heaven I read a wide range of descriptions of Christian Heaven. These included:
Fourth Gospel ('John')
Books of Revelation
Evangelical Church of England
Only after something-like this prolonged 'quest' did I reach the ('very simple!) understanding of Heaven that I now believe.