The book "Advances in the Physics of Particles and Nuclei Volume 30" is part of a renowned series dedicated to archiving comprehensive and enduring review articles published in the journals The European Physical Journal A and C. This series provides a valuable resource for libraries and research teams that prefer electronic access to these journals. In addition to the collected review articles, this volume occasionally includes original material written in review format and peer-reviewed by an editorial board. The current volume includes four significant reviews that address various aspects of particle and nuclear physics and present current research findings.