[Druid] Info on membership

Hello, I would like to know more about Druid, and more specifically, how to become a member. I am a PhD having my research very close to innovation/technology, however I am at CBS, department of Marketing, and have less contact with professors from Strategy & Innovation. Can I please receive some information about how to become a member, and if this is open to PhDs or researchers that work in the area of innovation? I have some PhD friends that are members of Druid and they recommended me to join, given my work - so here I am asking:) Thank you, Daniela