This is undoubtedly one of the better textbooks for AQA AS philosophy. Every topic and set text is covered and covered in depth. The narrative style is most definitely accessible, while the content is both authorative and imensely enjoyable.
The real joy of this textbook, though, is that extra amount of detail the author goes into. There are illustrations, explanations and digressions galore. The direct references to specfic thinkers and their works, including contemporary ones, are extremely beneficial. What this is tome is really useful for is that crucial extra evaluative points in exam essays.
However, there are certain...lovable eccentricites, shall we say, of this book. A lot of the detial is supeflous. Sometimes Hamilton doesn't keep a clear eye on the specification, covering things 'his way' instead. Every now and a then you question the relevance and wish the book had been a little more straightforward on a topic. Remember, this is definitely a book for the more able/more interested students, this is not suitable for all students.
These are criticims, no doubt about it, but they are ones that can be put aside it favour of the pros. Good textbooks are in short supply and this one really helped me on countless occasions. For every time you question the book's approach there is a multitude of times you will heartily commend it. The book is still, on the whole, excellent.
If you have the money, pick up a second book ('Revise Philosophy for AS' perhaps?) because reading different explanations and views I have found to be essential in this subject. Also, print out the specification and keep an eye on what you need to know.