WampServer

I am new at using PHP on a local machine. Please help.. Once I put the server in "On Line" mode, my understanding is that I can allow someone from outside to access the web site in www directory. What URL needs to be given for someone to access my site? Locally, I need to use c:.... and a whole www path but I am not sure how outsider can connect to my machine?? Hope this is not too
Forum: WampServer English