The first chapter of the book starts with the early ideas of the cosmos, moving on to scientist such as Copernicus, Kepler and Galileo. The second chapter gets on to the revolution in cosmology at the beginning of the twentieth century, with Einstein's relativity and Hubble's discovery of the red shift of distant galaxies. The third chapter 'Mavericks of the cosmos' shows that there was a long way to go before consensus could be reached. Singh explains how calculations of nucleosynthesis played a vital part in our understanding of the universe, and how Fred Hoyle gained support for his 'Steady State' alternative (and in fact coined the term 'Big Bang' as something of an insult).
The book is well written and gives plenty of simple explanations of the concepts involved, making it accessible to a large number of readers. However, I felt it was a bit long for the novice reader, and didn't include enough recent cosmology to serve as an introduction to the subject. Those with more experience of the subject would probably not want to plough through a large amount of material which they were already familiar with. It may well suit you if you've learned a bit of cosmology and want to find out more of the background to the subject, as its strong point is the detail it gives of the disputes in cosmology of the early and mid 20th century.