Ethnography is a qualitative research method that involves observing and describing a culture-sharing group. The researcher spends extensive time with the group in their natural setting to understand their shared behaviors, beliefs, languages, and other cultural elements. There are different types of ethnography, including realist ethnography which provides an objective account of the group, and critical ethnography which aims to advocate for marginalized groups and address inequities. Key aspects of ethnography include identifying a cultural theme, studying a culture-sharing group over time, and analyzing their shared patterns through fieldwork using techniques like interviews and document collection.