Lately, I have been asked a lot of questions about eschatology. Hoekema's book (see the link below) covers this subject biblically, graciously and thoroughly. I highly recommend it. However, be warned. If you are a person who has only been exposed to "popular eschatology," reading it may be a bit unnerving. Hoekema is amill, but he does a good job of graciously unpacking the other positions.