This highly illustrated textbook provides an essential overview on RNA architecture and function, it offers insights into the RNA basics and also explains novel RNA technologies, such as CRISPR-Cas and their applications. In addition, the mRNA based vaccine technology, which has long been tested, also before the COVID-19 pandemic, is discussed and students receive a basic understanding of this important medical application. The textbook is written by Prof. Grover in collaboration with her students and has an easily accessible style. The book provides a great tool for young researchers and students in biology, biomedical engineering or biochemistry, looking for a compact introduction or refresher work on RNA, including the newest findings and technologies. It is an ideal starter to learn about several RNA specific topics and to research them further.