the four major types of qualitative research:

Phenomenology. -The goal of qualitative phenomenological research is to describe a "lived experience" of a phenomenon
Ethnography -Ethnographic research usually involves observing target users in their natural, real-world setting, rather than in the artificial environment of a lab or focus group. The aim is to gather insight into how people live; what they do; how they use things; or what they need in their everyday or professional lives.
Grounded theory -Grounded theory refers to a set of systematic inductive methods for conducting qualitative research aimed toward theory development
Case study -examine contemporary real-life situations and provide the basis for the application of ideas and extension of methods

Difference between Quantitative and Qualitative research