The Bo Burnham pre-sale code has just been published. Everyone with this pre-sale password will have an opportunity to buy tickets before the public. 
Here are the Bo Burnham show details:
Bo Burnham
U of I Main Lounge
Iowa City, IA
Tue, May 7, 2013 08:00 PM
Onsale to General Public
Starts: Mon, 04/01/13 12:00 PM CDT
BO BURNHAM PRESALE
Starts: Thu, 03/28/13 10:00 AM CDT
Ends: Thu, 03/28/13 10:00 PM CDT
You can use this pre-sale passwords and information to purchase tickets: