Tracing your family tree can seem like a daunting task. While you are bound to run into a brick wall ancestor eventually (most of us have at some point), getting started is easier than you might think. Just sit down with family members and ask them to share what they know about the family. If exact dates of births, marriages or deaths are not known, try to narrow it down to a few year's range. It will help when you begin researching.
Older relatives can be a goldmine of information. However, it is possible that their memory may not be as sharp as you would like. It is not unusual to hear someone mention an Uncle Jim or Aunt Sarah, but not be able to remember which side of the family they were on. You still want to note these names as you will probably come across them again as you begin to build your family tree.
If you have a large family, you may want to record conversations and then transcribe them later. This will enable you to focus more on the conversation instead of scrambling to get everything written down.