How can I effectively pump up Presta valves to ensure proper inflation of my bike tires?

To effectively pump up Presta valves for proper inflation of bike tires, follow these steps:

1. Unscrew the top cap of the Presta valve and press down on the valve to release any trapped air.
2. Attach the pump nozzle securely to the valve by unscrewing the small nut at the top of the valve.
3. Pump air into the tire until it reaches the recommended pressure level.
4. Remove the pump nozzle and tighten the nut on the Presta valve to prevent air from escaping.
5. Replace the top cap on the valve to protect it from dirt and debris.