I use regularly LUKS on my personal boxes, and I can teach how to install Debian with this partitioning scheme, including dual booting with windows. I can also show how to reinstall grub on a LUKS partition if you have to update / reinstall windows and it overwrites your MBR.
Also, I can teach how to set up Thunderbird with GPG, or even mutt (though it's been a while).
I can't help with preparations though, too busy for that. I'll visit this wiki regularly to see if there are other interested parties.
Hi rcb, some people planned a cryptoparty on 20th and 27th October 2012 in Sao Paulo. More info here: https://diabolo.milharal.org/ciclo-de-oficinas-diabolo/