https://www.familysearch.org/en/wiki/Ukraine_Genealogy
https://www.familysearch.org/en/wiki/Ukraine_Online_Genealogy_Records
https://www.ancestry.ca/search/places/europe/ukraine/
REGISTER HERE https://pra.in.ua/en
https://www.worldgenweb.net/ukraine/
http://ukrainiangenealogygroup-ncr.org/
https://www.familytreemagazine.com/heritage/ukrainian/tracing-ukrainian-ancestors/
https://www.wikitree.com/wiki/Project:Ukrainian_Roots
BOOK John D. Pihach in his book Ukrainian Genealogy, considered by many as the authoritative guide to Ukrainian research.
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https://www.familytreedna.com/groups/ukraine/about/background