I read it while desperate for sleep with my first child. I didn't follow it, though - she kind of started sleeping before I could. I tried the infant part with my son, but he would never go down on his own. I know the example said it took 8 times, but we tried for HOURS and it didn't work.
I am now desperate for sleep once again and have thought about going back and reading it. I saw a segment on Dr. Phil a few years back that modeled this idea and it took a week to 10 days, but worked for that mom.
Does your daughter cosleep? You can try Dr. Jay Gordon also and see what you think.
Good luck and I'll think of you while I'm up with my little one tonight!
J.