You will need
  • - Internet access
  • - a certain amount of money
Investigate among relatives and even the most distant relatives. You need to know literally everything about their family life. The basic facts that you may need: accommodation, classes, parents, friends and relatives with whom contact was their parents, location at the time before the war, various details connected with it. You also need to learn about pre-war life of the family and their prosperity. Information on senior representatives of that generation will also be useful. Possible to find out about the nature and habits of the parents of your relatives. And of course, you need to ask about life before the war and the subsequent fate of the family member.
Record all the information known to you (preferably in English) in specialized programs. Of free offers PAF, subsequently you can already buy more advanced, such as RootsMagic, Ages, GenBox. You can specify not only the names but also some more details of your alleged relatives.
Search for, recycling as much as possible different information. You can search for information about the places where your relatives lived, and to connect with people with similar names. Ways just a lot of free portals, they will surely appeal to you. Various databases of emigrants from Eastern Europe, lists of emigrants to the United States of America in the nineteenth-twentieth century. As well as various Russian genealogical forums. Before you spend money for access to the archives, look carefully there.
Start searching in the archives. Pay for access is worth only if you did not help either search the Internet or attempts to get in touch with the alleged relatives. Archives work in several ways. You can access directly or to hire someone who will look up information for you. This is convenient because it is taken for professionals, but the cost of services may seem high. In any case, the choice is yours.