I've just purchased a little known but quit recent (1998) book by an ex-Witness in the UK called Susan Thorne. It's full title is Held By The Watch Tower - Set Free by Christ.
Believe me, the insights provided on the day-to-day life of JW's as found in this book are eye-opening. It really does give you a glimpse of what life in the congregation is REALLY like. I could only disagree with the author on very minor points. You will find these insights quite fascinating.
Of interest the authors husband, Mike was also a JW and a respected scientist. Inside you will read all about his personal doubts on WT understanding and you read a testimony of what happened when he questioned some of the pseudo-science as found in WT publications.
Both have now left the Watchtower and are Christians.