Ethnographic field research involves the study of groups and people as they go about their everyday lives.

Ethnography in UX
UX Matters
Making the Most of Ethnographic Research
UX Magazine
Usability Body of Knowledge
Ethnography Research
Hanno's User Experience Playbook
Top 10 Ethnographic Research Videos
Ethnography and design: get to know your users real good
UX Oslo
Ethnography in Industry: Methods overview
UX Magazine