what is a short summary of the book??

That's tough to do in a paragraph. This is right from the GradeSaver summary and really sums it all up,

Great Expectations is the story of Pip, an orphan boy adopted by a blacksmith's family, who has good luck and great expectations, and then loses both his luck and his expectations. Through this rise and fall, however, Pip learns how to find happiness. He learns the meaning of friendship and the meaning of love and, of course, becomes a better person for it.

If you wish more detail, just follow the link.