Bicycle assembly involves putting together various components to create a functional bike. Key parts include the frame, wheels, handlebars, brakes, and gears. Each component must be securely attached, often using tools like wrenches and screwdrivers. The process typically starts with the frame, followed by attaching the fork and wheels. Next, the brakes and gears are installed, ensuring they operate correctly. Finally, the handlebars are added, and adjustments are made for comfort and performance. Proper assembly ensures safety and enhances the riding experience.