Meat post

Oh, does anyone have tips on how to use a broiler??? I've never done before, successfully. I have a gas stove that has a little broiling compartment underneath the oven, with a broiling pan and everything. Do I just put the meat on there, and then flip it after 4 minutes? Do I close the little broiler door or leave it open? Is there anything else I'm supposed to know? I bought something called 'london broil' from the store because it was on sale. It looks good, I don't want to fuck it up.