Keypad and LCD interface

Hey friends, I just got my 4x4 keypad and 4 x20 LCD.

I want to ask, how can I program both the keypad and the LCD ? Perhaps like a menu program ?

Thank you :)

Just want to test if my keypad and LCD is working or not.Hehee

http://arduino.cc/playground/Main/KeypadTutorial http://arduino.cc/en/Reference/LiquidCrystal

Serial.println(key);

What do this means ?

http://arduino.cc/en/Reference/Serial http://arduino.cc/en/Serial/Println