Peter Atkins promises at the outset that this will not be a light read, and it isn't, at least not if you want to really take it all in and much of it is new to you. Gibbs energy and Helmholtz energy are discussed, as are negative (below absolute zero) temperatures. For a very short introduction to the subject, it goes into considerable depth.
You would need no more than an average grasp of High School maths and science to follow the arguments completely, and not even that if you are just seeking a flavour of what the subject is about and are willing to settle for less than a thorough understanding.
Atkins writes very well, with clarity, elegance and an infectious enthusiasm. There is certainly no lack of the latter - he describes these laws as 'a mighty handful' that drive the Universe, and claims that 'no other scientific law has contributed more to the liberation of the human spirit than the second law of Thermodynamics'. I'm not sure about that, but I do now appreciate the fundamental importance of these laws and how they are crucial to understanding how Nature works.
[PeterReeve]