Here are my notes and solutions to accompany the book *A First Book of Quantum Field Theory* (Second Edition) by Amitabha Lahiri & P. B. Pal. As always, no guarantees that my solutions are actually correct.

Errata for the book can be found here.

**Chapter 1: Preliminaries**

1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8

**Chapter 2: Classical Field Theory**

2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.11

**Chapter 3: Quantization of Scalar Fields**