One of the things that have helped me be less shy and thus have helped me move forward in life is speaking in public. However, I have been speaking in public very little these last couple of years.
So, make me do it more. I am looking forward to speaking in places I haven't been. If it's not horribly far from Buenos Aires, I may not even ask you to pay for my trip and/or hotel, I will pay for it myself if the event is interesting or the place looks like a fun place to travel to.
I can speak about python, free software in general or other things you may suggest, and I can do it in spanish or in english.