The document discusses methods of collecting secondary data for business research. It lists common sources of secondary data like handbooks, directories, technical reports, scholarly journals, literature reviews, trade journals, reference books, official statistics, indexes, bibliographies, encyclopedias, data marts, and tertiary sources. It notes advantages like being quick and saving time and money, but also disadvantages like difficulty determining quality and not having all desired information. It provides an example of PIAC collecting secondary data from scholarly journals and technical reports to increase sales and customer satisfaction.