Do you like open-source? Would you like to give back somehow but are not sure what to do or where to start? In this presentation we look at the usual workflow for making any kind of contribution, using a real patch as an example. I'm using my first contribution to OpenStack as an example, as this seems fitting for a Python conference! Hand-out: http://tinyurl.com/ep-open-source Video: https://www.youtube.com/watch?v=U7HJuC84Lpw Transcript from a previous, quite similar version of the talk: http://www.jpichon.net/blog/2013/02/talk-transcript-first-open-source-contribution/ Presented in Berlin for EuroPython, July 23rd 2014.