I started to read it. I could not finish it. I have read accounts of how it is supposed to go down - or up as the case may be.
But Israel, as promised by God, has been restored. The time of the Gentiles is almost complete. The rapture is therefore imminent. The Rapture idea is clearly stated in Thessalonians. The Church is clearly taken out of the picture in Revelation Chapter 3 and does not appear again until his Golorious Appearing. God will deal with Israel during the period in between.
The bottom line is that you don't have to believe in the rapture for it to happen. And its going to happen. You will believe it when it happens. It probably won't go down like Tim LaHaye thinks it will. But it will go down. Or up, actually.