Advance directives are legal documents that allow people to indicate their preferences for medical treatment if they become unable to communicate their wishes. The document discusses: 1) Types of advance directives including medical power of attorney, living will, DNR, and HIPAA authorization. 2) Who needs advance directives, noting that everyone should have some form of advance planning to avoid confusion and conflict if decision-making needs to be made by others. 3) Tips for preparing advance directives like choosing an agent, considering treatment preferences, and communicating wishes to family.