The Handmaid's Tale

The story is starting to pick up. I am still a little confused about some things shes talked about so far. For example what happened to her daughter and Luke and where are they now? I'm interested to see what happens later on about the passage she found in her closet..do we ever find out what it means? Also, it will be interesting to see if she ever finds out anything about the Handmaids who lived in the room before her.