In order to find out how people lived in the distant past, you need to use the finds of archaeologists. Archaeologists are scientists who reconstruct history from material monuments. Before leaving for excavations, they study the literature of the area where the research is supposed. Then they reconnoiter the area. After that, they start excavating. They dig with shovels, removing thin layers of earth. The collected material is processed and studied. The finds of archaeologists are material historical monuments or historical sources.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.