This might sound funny, but I really have no clue...

I'm registered for the Techno Security Conference [link] in June and I'll be taking a class there. This will be my first security conference. The only other thing I've attended in the past has been the Detroit ITEC (which is somewhat boring). In addition to the classes, I see that there are a bunch of speakers giving presentations. I've looked around their website and such, but I don't see any information as to how you listen in on those presentations. Do they normally cost anything extra? Do you sign up at the conference or do you just walk on in at the designated time?

Thanks experienced conference attendees

Ah, alright. Thanks a lot, Cutaway.