How can I safely and effectively remove drywall from a room?

To safely and effectively remove drywall from a room, start by turning off the electricity and water supply, then remove any fixtures or furniture. Use a utility knife to score the drywall, then carefully pry it off the studs. Wear protective gear like gloves and goggles to prevent injury. Dispose of the drywall properly and repair any damage to the studs before installing new drywall.