The first step in putting together your family history is to record what you know about your immediate family. Then begin to work backward.
When I began to research my family history, I started with my dad’s family. His family came to America in the mid-1800s from Scandinavia. I encountered a dead-end prior to the point that my dad’s ancestors left Sweden and Denmark.
Minor details lend interest to a family history. Showing how various family members might be connected to other people and events makes family histories fun. It doesn't take long to discover that there are more things tying us all together than there are keeping us apart.