I get a kick out of Esau Edom’s mix of the personal and the political, and yes — his story is
free to read online in many places. The basics: Esau is Jacob’s twin, son of Isaac and Rebekah, described as a skilled hunter and the manly, ruddy
brother who sold his birthright for a meal. That material is in 'Genesis' (chapters 25, 27, 32–33 and 36 are key), and the nation that springs from him, Edom, appears in prophetic books like 'Obadiah'.
For reading, public-domain translations such as the 'King James Version' are on sites like 'Wikisource' and 'Project
gutenberg'; modern translations and tools are available free on platforms such as 'BibleGateway', 'BibleHub', and the Hebrew text with translations on '
Sefaria'. If
you prefer background, Wikipedia and the Jewish Encyclopedia offer free overviews and links to primary texts. I usually skim the main passages, then read a couple of commentaries to see how different traditions treat Esau — he’s more than just the stew story in my view.