Would you like to hear the history of Koha presented by a NZer and and Frenchman? You can listen as we alternate between accents, there is a real chance you will understand neither of us :)
But seriously, Kohacon is a free conference, held every year. This year it is in Reno, NV. Last year was Edinburgh UK, Thane India 2011, Wellington NZ 2010, Plano TX 2009 etc. http://koha-community.org/kohacon/kohacon13/ It is a chance to get together with Koha users, developers, and other interested people and talk about Koha, and to a lesser extent FOSS in the library world. It is a free conference, I will be bring NZ craft beer ... what more could you want? Chris