Installing cabinets involves measuring the space where the cabinets will go and ensuring the walls are level. First, you should gather all necessary tools, such as a level, drill, and screws. Start by marking the wall where the cabinets will be mounted, then secure the upper cabinets first, followed by the lower ones. Once the cabinets are in place, check for alignment and make adjustments as needed. Finally, attach the cabinet doors and hardware, ensuring everything opens and closes smoothly. Proper installation ensures that the cabinets are sturdy and functional for everyday use.