This is a paper from some years ago about techniques for good interviews. It’s basic, but I think there are some basic rules that need to be followed in the collection of interview data. Technology has moved on a bit. You can now use Livescribe for recording and notetaking, but Express Scribe is still a great tool. But there is nothing like being a very careful observer to all that goes on, both verbally and non-verbally.
Stillman, L. (2007). Using interviews effectively in community informatics. Researching with Communities: Grounded perspectives on engaging communities in research A. Williamson and R. deSouza. Auckland, Muddy Creek: 371-383.PDF