The textbook "Models and Methods of Magnetotellurics" offers a comprehensive introduction to magnetotellurics, a method for investigating electrically conductive structures beneath the Earth's surface. The authors, Mark N. Berdichevsky and Vladimir I. Dmitriev, present a systematic approach to the modern theory of ill-posed problems, which is crucial for the precise interpretation of magnetotelluric and magnetovariational measurements. The book discusses interactive interpretation methods that include hypothesis testing and successive partial inversions to minimize the static effects of inhomogeneities in the near field. The efficiency of these methods is illustrated through new geoelectric models, such as those of the Baikal Rift Zone and the Cascadia Subduction Zone. This work is aimed at both professionals and students engaged in the application of magnetotellurics in geophysical research.