Adam Swinden has created a Google spreadsheet to help people connect at WWDC this year. There are over 400 people already registered with this list but that's far from the thousands that are going to be attending WWDC. So, if you are not already on this then you probably want to add yourself and sign up for the Glassboard invitation as well.
As always, there are many WWDC first timer guides which have been published or updated over the last couple of weeks so it's hard to pick one. I ended up picking this comprehensive guide from Uli Kusterer this year so if this is your first year then make sure to read this so that you get the best out of (or just survive) the week.
Hopefully you are already signed up for a few of these as many of them are sold out. You shouldn't struggle to fill every night (and lunch, and breakfast) with an event of some sort if you want to.