To realize a Stolperstein, it is necessary to know facts about the life of the person who was persecuted. The full name (and maiden name), the year of birth, the important dates of the persecution process, the dates of deportation/exile and the dates of death are essential for the inscription on a Stolperstein. Just as important as this is the last voluntarily chosen address in Berlin.
If you follow this link you will find all important institutions and also online-addresses which are important for doing research. You can also get advice from the local Stolperstein-groups how to start your research best.
The more you know about the fate of a persecuted person, the easier it is to find out where the Stolperstein will be laid and to write a biographical text about the life of the person.