urgent help!for Line follower Robot.

Hi everyone!Karl JC Bongcasan...I'm new to arduino can anybody tell me how to make a line follower robot using arduino...???can you post some tutorials how to make it...your help will be much appreceated...thanks..

https://www.google.com/search?q=arduino+line+following+robot

i saw a link that uses arduino uno,ardumoto motor shield and LDR's for the sensor....can i used arduino motor shield instead of ardumoto?but still i will used LDR's for the sensor?Are there any changes or conflicts?here's the link http://www.buildcircuit.com/ldr-based-line-following-robot-using-arduino-and-ardumoto/