I have looked it up on www.sainsmart.com and found a kit that is not so hard to get started. I am planning to buy the a similar Arduino kit, can someone recommend some for me?
The kit should be like this one: http://www.sainsmart.com/multimeter-usb-oscilloscope-meter-signal-generator-module/sainsmart-uno-lcd-keypad-prototype-shield-hc-sr04-distance-sensor-kit-4-arduino.html
The kit should be like this one: http://www.sainsmart.com/multimeter-usb-oscilloscope-meter-signal-generator-module/sainsmart-uno-lcd-keypad-prototype-shield-hc-sr04-distance-sensor-kit-4-arduino.html