Connect with a Jewish Genealogical Society
The International Association of Jewish Genealogical Societies (IAJGS) is a global organization that governs separate societies all over the world. Joining one of these can be extremely beneficial in your search for more information about your Jewish ancestors.
One of the primary functions of Jewish Genealogical Societies is to "assist and promote the research of Jewish family history." You will frequently come across large collections of genealogical information, and you may even meet people who have firsthand knowledge of your relatives and history.
You can access it at the following link: https://www.familysearch.org/rootstech/expohall/international-association-of-jewish-genealogical-societies