How to reconstruct the tragic history of your Jewish ancestors in France and Belgium (1940-1945)

How to gather only useful information about your ancestors ?

The complete 3-step method to already get a result (tools included)
Direct inspiration for your own discoveries: 5 practical cases, 16 examples, 9 useful links
– 17 recommendations to avoid drowning or making unnecessary expenses or research

NB : this method of historical reconstitution from genealogical information is transposable to other periods of the jewish life in Europe.