This isn't a textbook on epigenetics. It's an elementary,light introduction that raises the subject to the level of consciousness. It does this admirably by the use of concrete examples. There is an excellent bibliography and citation section coherent with the content that will allow those who wish to pursue the matter in greater depth to go further. Nevertheless, it does contain some technical terminology and protocols that assume the reader will be familiar with - although lack of such knowledge will not substantially detract from the purpose of the book. It's effectively a preliminary book that introduces epigenetics and can be read over a few days that is useful in presenting the topic for those who may have come across it in the popular press.
What your Granny did and what she was exposed to in her life might very well be determining how your genotype suppression and activation leads to that phenotype you despise when you look in the bathroom mirror of a morning......... no matter how hard you attempt to alter it! This little tome is certainly worth the read. It achieves what it sets out to do on the cover sub-title by explaining: How environment shapes our genes - but does so in a surprising and interesting fashion.
Currently epigenetics is below the main public radar. That's going to change. This book, in its own small way, will assist that process.