This BOOK, written in a very personal context, portrays part of my experience of nearly 40 years as a doctor and general surgeon, seen in the light of what informed consent (also called free and informed consent) is in the day-to-day life of a surgeon who practises the doctor-patient relationship with the will, to inform the Patient (in an environment of mutual trust) of the reasons why they need to undergo a Surgical Procedure and the risks (and the care they should take) arising from not accepting the surgical proposal. A set of 13 (thirteen) of the most common surgical procedures is presented, with a description of the underlying diagnosis, the most successful surgical techniques and the existence (or not) of apparent alternatives for each pathology with an indication for surgery. Surgeon, Patient, Healthcare Team and Family should form a United Group with the same goal of improving the Patient's Health. Artur Ramon de La Feria.