The Bible is kept locked up so the regime can interpret it in any way they please. They do not want people freely reading it as they could interpret it in a way that runs contrary to the state's interests.
The Handmaid's Tale study guide contains a biography of Margaret Atwood, literature essays, quiz questions, major themes, characters, and a full summary and analysis.
The Handmaid's Tale literature essays are academic essays for citation. These papers were written primarily by students and provide critical analysis of The Handmaid's Tale.