Once you have written down the information that you personally know, the next step it to find out what your family remembers. Show your notes to siblings and parents, and collect their input on the tree. Recording the interviews will allow you to review what they say later. Talk to the oldest members of your family, bearing in mind that some memories may not match facts that you find out later. Write down a list of questions to ask and collect as many names and dates as possible. If you have unidentified photographs, go through them with older family members to try and put names to faces.