The American Society of Anesthesiologists has a plethora of patient education handouts, in English with some in Spanish at their patient education website.
One of these handouts, created by the ASA and the American Association of Nurse Anesthetists, is Patient Awareness Under Anesthesia - What Is It?
"The brochure explains what awareness under general anesthesia is and isn¹t, and why it can happen. It discusses what researchers and health care providers are doing to lessen the chance of this rare event and offers guidance to patients for discussing concerns about awareness with their anesthesia professional."
This brochures is available in .pdf format and is also available in Spanish.