The first big writers conference is overwhelming for most of us. It was for me too. Though I was so excited about all that I'd be learning and the contacts I'd make, I still arrived, and as you learned at my last post, I got lost right way.
Because it can be so overwhelming, it helps to remember why you decided to come in the first place, and pace yourself. You may have a commando approach like I did, where you just want to dig in, and learn as much as possible, but allowing for mental breaks will best optimize your time.
