I am giving a talk at an Arduino workshop next Saturday 17:00. There is no attendance fee and people will be able to try their own code on the available Arduinos. Contact was made through the Arduino Forum and Vicent Ferrer proved to be quite an entrepreneurial person.
Presentation will be held in Spanish and hopefully it will include a lot of Q&A and user experimentation. If you bring your own laptop you will be sure you'll get the development environment installed.