What are the potential problems that the ethnographic researcher may experience in the field, and how can the researcher overcome them?

Ethnographic Research: An Evaluation of Some Theoretical and Practical Problems

Problem: What is the importance of ethnographic research for the social sciences? What are the potential problems that the ethnographic researcher may experience in the field, and how can the researcher overcome them? What strategies and tactics can the researcher apply in this process?

Body:
Theoretical Issues and Problems
Determining the theoretical and conceptual framework to be used
Deciding on appropriate research design

Methodology Issues (Design, Selection of Data Collection Tools and How to Perform Analysis, Validity and Reliability Issues)
Ethical problems and how to overcome them