It provides extensive practice in deriving equations of motion using these methods, which is a major part of the GATE/NET syllabus.

Use the end-of-chapter problems as a "mock test." They are often similar in style to those found in university honors exams. Searching for the PDF?

Specific related to a particular chapter (e.g., Tensors or Green's functions). Comparative reviews with other texts like Arfken or Boas.