We created interview kits after a brainstorming session on what to find out in our research. They include a different (but similar) interview kit for the global audience, the audience in the developing world, and a short survey. The first two parts can be used when we meet people face to face and ask long and open questions, while the survey might be online. These kits will be updated according to the comments of our team.
We already started interviewing a couple of friends and relatives.