It is a common mistake to confuse 'Method' acting, as taught at the Actor's Studio in the US, with the 'Method of Physical Action', which was a late development in the organisation of Stanislavsky's work. Those looking for a handbook of the 'Method' will not find it here. This is, as the title suggests, an introduction to Stanislavsky's 'System'. The 'System' is not the 'Method' either. It covers both Stanislavsky's ideas about the training of the actor and the organisation of those ideas into the context of rehearsal. Stanislavsky was searching for a 'grammar' of acting, and his 'System' was the result. This book will teach you nothing about 'Method' acting. It is focussed on 'Action' as contrasted to the 'Method' focus on 'Emotion' as the primary process. If you are a Method actor, read it anyway, and compare.
Do not make the mistake of thinking the American 'Method' is based on Stanslavsky's life work. It developed from a narrow focus on some of his early work, and filtered through misunderstandings and cultural and linguistic difficulties to evolve into something he would not recognise.
If your interest is academic, look elsewhere. Nothing is referenced, which makes it impossible to substantiate and gives the impression of sloppiness, and the bibliography is a mess. It was first published in the sixties, and a lot has come to light since then. Try Benedetti's 1998 book, which he claims is the manual Stan would have written if he had time, or Carnicke if your interest is serious and you want careful, scholarly contextualisation and an insight into the controversies over language and interpretation.
Apologies for the inverted commas, intended to clarify rather than look pretentious. Actually it does look pretentious, but hey.
