I think Seth Godin’s book, The Dip should be read by everyone. Almost everyone would go though a Dip in their life some time or other. This book will help you to make a correct decision and look at the opportunity when somebody/something is going through a Dip. I also think that within 6-12 months 50-70% of the builders will need this book as the properties prices have started moving southwards. Check this book.
http://www.sethgodin.com/getthedip
http://www.sethgodin.com/thebestintheworld