Disaster management involves preparing for, responding to, and recovering from both natural and man-made disasters to minimize their effects. It includes disaster mitigation measures to reduce risk, preparedness planning and training, emergency response during and immediately after a disaster, and recovery efforts to rebuild infrastructure and restore communities. The key principles are using existing day-to-day resources, focusing on large-scale events, making individuals responsible for their own safety, and involving non-government agencies. India is vulnerable to various types of disasters due to factors like its climate and geography.