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Book, “X-Ray Spectroscopy for Chemical State Analysis” (Jun Kawai, Springer, 2023) Professor Jun Kawai (Kyoto University, Japan) has published an interesting and useful book on materials characterization methods using X-ray emission, absorption, and photoelectron spectroscopies. Readers will be able to learn about basic X-ray physics topics such as “Particle and Wave Duality of X-rays” (Chapter 1), “Profile Change of X-Ray Spectra” (Chapter 2), and “Chemical Effects of Multiply Ionized Satellites” (Chapter 3). They can also gain some practical knowledge on instrumentation, including “Pyroelectric X-Ray Emission” (Chapter 4), “Small-Size and Low-Power X-Ray Instruments” (Chapter 5), “Synchrotron Radiation Experiments” (Chapter 6), and “Quantitative Analysis Using XRF and SEM” (Chapter 7). The book includes some interesting historical episodes, such as Professor Yoneda's discovery of enhanced diffuse scattering at the total reflection critical angle (now often called the Yoneda peak or Yoneda wing in grazing-incidence small angle X-ray scattering) and TXRF. The author also describes his own experience - how he has achieved novel experiments. The book consists of 243 pages. Overall, this book seems to provide a good overview of X-ray spectroscopy methods and their applications. The inclusion of historical context and the author's experiences helps to give readers insight into how these techniques were developed and applied in practice. For further information of the book, see the following page, https://doi.org/10.1007/978-981-19-7361-1