For those new to quantum field theory (QFT) and particle physics, recommended reading includes Griffiths' "Introduction to Elementary Particle Physics," followed by Aitchison and Hey's "Gauge Theories in Particle Physics," and Maggiore's "A Modern Introduction to Quantum Field Theory." Essential mathematical knowledge includes calculus in the complex plane, differential equations, linear algebra, Fourier transforms, and basic group theory, which can be learned concurrently with QFT studies. Peskin and Schroeder is noted for its clarity but may also present some confusing sections. Learning group theory alongside QFT is advised, with a focus on applications relevant to particle physics.