I will be hiking the trail in late March and have decided to just resupply in towns in whatever grocery stores or gas stations I can find. My question is this: When do you know where your turn is to head to town? Is there a big sign off the main trail that says "Neel's Gap -->" or does the trail run straight through to town. The reason I am asking is I have not yet bought any guide books or companions so I really have no idea about things like this. Do I even need to purchase a guide book or is it blatantly obvious where the side trails are to get to town?