32C3 refers to the 32nd Chaos Communication Congress which took part at the end of December 2015 in Hamburg. The theme this year was Gated Communities..
The logo and main theme evolves around impossible bottles (also known as Ships In A Bottle, these decorative, but absolutely useless, and locked-in-for-no-reason tourist souvenirs - source
The Congress offers lectures and workshops and various events on a multitude of topics including (but not limited to) information technology and generally a critical-creative attitude towards technology and the discussion about the effects of technological advances on society.
The 32nd Chaos Communication Congress (32C3) is an annual four-day conference on technology, society and utopia.
For 32 years, the congress has been organized by the community and appreciates all kinds of participation. You are encouraged to contribute by volunteering, setting up and hosting hands-on and self-organized events with the other components of your assembly or presenting your own projects to fellow hackers.
Some basic survival guidelines might come in handy for everything not answered in our 32C3 FAQ. Updated information are covered by the CCC Events Blog or via Twitter (@CCC).
The Chaos Communication Congress (CCC),is an annual conference organized by the Chaos Computer Club. The congress features a variety of lectures and workshops on technical and political issues related to Security, Cryptography, Privacy and online Freedom of Speech - wikpedia 
CCC organises most all of it's activity through a wiki. They currently use Mediawiki and set up a new instance of a wiki for each year.
Talks we have watched and are researching:
CCC-TV, offers a wide variety of video and audio material distributed by the Chaos Computer Club. Here we are looking to Research and Archive this material, using a decentralised architecture, in order to create a Collaborative Research Platform around the subjects featured in the congress - media.ccc.de