O God! very simple…
the easiest way for to memorize the long story in your mind in a very wonderful way to read it only three times then i guarantee you that you will memorize the whole story in your mind
read the story throughly to get the idea of story

underline the points of the story

————–third——– just repeat the Underlined points of the story then you will surprisingly the saw the whole story not only one the page but also in your mind

tk cr
Muhamad Ahsin Sana