The book is devoted to clinical arrhythmology and is written in a practical and understandable manner, intended for young cardiologists who sometimes get lost in the complexities of the field and fail to organize their knowledge in an efficient way. With this goal in mind, a number of prestigious specialists in the field have collaborated in this joint venture, writing a number of concise, useful, and very interesting chapters that summarize many hours of work and professional dedication. The result is easy to read and easy to handle. Perhaps best of all, this is an opportunity for the reader to enjoy a very personal celebration of friendship and electrophysiology.