Please vote for the 4 sessions that you have the most interest in. If you are interested in something that isn't listed, enter it in the "Other" box. (And, you don't have to vote for exactly 4. You can vote for less and have each vote count for more, or for more and have each vote count for less.) See
http://wiki.g2.bx.psu.edu/Events/GCC2012/TrainingDay#Workshops for descriptions of W1-W7 and W15.