@zeeshi361

1-In my opinion you should cover the whole book as there are specific areas which i hav mentioned above and this book covers more or less all these aspects.Don't rely on one book,u can use combination of books as the real motive behind this is cover the syllabus mentioned by fpsc.
2-Pay special attension to smart studies by focussing on last 10-12years psychology papers that will give you an idea about the paper pattern and important areas.

best of luck