Sego Lilly, that's true unless you have 7 or more generations on your
direct line already completed and several lines dead-ended. In that case, you
can make a great contribution by going back to a distant ancestor and working
forward. It's called descendancy research, which FamilySearch supports.
Start with YOURSELF and work back,You, parents and their sibling and children,
grandparents with their siblings and children, greatgrandparents with their
siblings and children Don't pick a surname and work from that you will get
lost and in a huge mess. Even the Family History Library and Familysearch will
tell you to start with yourself and work back.
Pray that you do not have ancestors from the Middle East. FamilySearch has few
resources for the region and do not send digitizing teams there. So, you spend
thousands of dollars in tuition and thousands of hours learning Arabic and more
thousands in travel expense. When you get back home to submit the names for
ordinances, you find the system clamps down on your names and requires you to
prove how you are related to these people. So, you submit all the names for
review. When you don't hear back for a year, you inquire and find out you
must submit nor more than 10 names at a time. It's quite another matter if
you want to do the work for a beloved Canadian school teacher (See "To the
Rescue," p. 182). In short, few resources available locally and more rigid
policies when you want to submit names for ordinances.