Watch the The Edge online guitar lesson by Jeff McErlain from Kings of Tone
Buying pedals can be a slippery and expensive slope mainly because there are so many cool ones out there! I suggest a decent delay with a tap tempo, a chorus pedal, and an overdrive. That will get you there pretty quickly. I suggest that you put your delay last in line where it sounds best, where you put the chorus is a matter of taste. For more of an new wave 80's tone I suggest you place it after your overdrive. For more of a 60's/70's tone place it before.