Why does the Torah, essentially a law book, start with stories of creation?
Ita an interesting question and one that the Rabbis ask themselves. After all- if it is a story of G-ds relationship with the Jewish peopel and the law he expects them to follow- starting with Abraham would be the logical place. The answer given by Rashi and seen as being correct by many of the other Rabbis is to establish G-d as the creator and thus owner of the entire world. Once this is established, it becomes his right to decide who owns what and who lives where.