Use Wikipedia with caution.
More encyclopedias, handbooks, and other titles focused on overviews of Jamaica and the Caribbean literature, culture, international relations, etc.
More information and possibilities for specialized encyclopedias
Library catalog searches to start with which can be modified to suit your particular focus and needs:
Jamaica agriculture and farming
the environment and Jamaica and/or Caribbean
Lots more information about how to search the library catalog and requesting items, etc.
Lots more information about how to searching databases and accessing articles and requesting scans, etc.