Are you looking for non-fiction or fiction?
If non-fiction, The Feminine Mystique by Betty Friedan should be required reading if one is looking for an intro. Yes, it’s old, but…it’s Ms. Friedan, for goodness sake. Another old book that shows the flip side, a must-read is The Total Woman by Marabel Morgan. It’s humorous today, but sad part is that it sold over 10 million copies.
As for fiction, I agree with @jenandcolin‘s vote for Margaret Atwood’s A Handmaid’s Tale, as well as Cat’s Eye. A Woman of Independent Means by Elizabeth Forsythe Hailey is another personal favorite, as well as The Color Purple by Alice Walker.