For both Gianfranco's presentation and workshop, please find the materials at the following URLS:

Presentation: http://prezi.com/tykxxarbd8ob/tdd/

Katas for practice: https://github.com/Gianfrancoalongi/incremental_katas

APLUnit Library: https://github.com/Gianfrancoalongi/APLUnit/blob/master/UT.dyalog