My cousins have provided a lot of pictures to give a face to the stories. And my Dad is like a vault of information. Since I have been working on my Family History, I have found so many living distant relatives and have been colaborating and sharing much info and have received a lot of photos and information from them. My best advice would be to first, interview your oldest living relative. They have a lot of memories that are invaluable and won't be accesssable forever.
Family reunions are the best way to get a lot of information.
I have added some helpful links to get you started.