The book "High-order discontinuous Galerkin methods for the Maxwell equations" by Hassan Fahs offers a comprehensive investigation into the development of a high-order discontinuous Galerkin time-domain method (DGTD) for solving the Maxwell equations on non-conforming simplicial meshes. It addresses the application of high-order nodal basis functions to approximate the electromagnetic field within a simplex and describes a centered approach for calculating the numerical flux at the interfaces of neighboring elements. Additionally, a second-order Leap-Frog time integration scheme is introduced. To reduce computational costs, a hp-like DGTD method is proposed that combines local h-refinement and p-enrichment. The book also includes a detailed numerical assessment of the DGTD methods based on various propagation problems and explores a family of high-order explicit Leap-Frog time schemes to enhance accuracy and convergence.