My son started hitting before he was 2 and is now 26 months old. I bought a few other books beforehand because I didn't think they were many pages or better than what we had. I finally gave in and I'm glad I did. I've attached the first two pages. Another reviewer said it wasn't obvious enough, but I almost appreciate subtlety more because it shows my son that he doesn't have to be completely hysterical to call. In addition, there are a variety of suggestions that the baby can make to calm down. I've also included the last two pages written for adults. I bought the Big Little Feelings course and learned more about tantrums. These pages are a BIG summary of how to tackle tantrums and the main reasons. My only regret is that I didn't buy it sooner. When in doubt, just do it :)