Duplicates and next hunt

I've discovered that I have non related or duplicate people in my tree.  I think that's from not really knowing what I was doing in the beginning.  I merged every hint I received from Ancestry.  I've now realized that some of those may have not been my relative or the information was wrong.  Now, I'm spending my extra time fixing my links and deleting people.  I'm hoping to start locating birth records and ordering copies.  I have my hanging files and folders organized but I still need to get my computer files organized.  I'm going to use the system that is used by Lisa Louise Cooke, the creator/host of Genealogy Gems Podcasts.  My family seems to be out there and very accessable I haven't had any brick walls yet.  My aunt told me that my great great grandmother was Native American but I haven't found that.  That's my next adventure is to find out more information on Virginia Ann Marshall b Dec 29, 1849 in Indiana and died Feb 21, 1922 in Effingham, Illinois.  Is she Native American Indian?

Update

I've been working alot on my genealogy lately.  I"ve been reading books, listening to podcasts and reading online.  I finally took a trip to the library and discovered a book about a Mayflower ancestor that I have.  I wish I could buy that book some how or somewhere.  I haven't started my hunt for that book yet.  I finally found my grandmother's grandparents.  I've been updating my list of family on my online trees.  I've noticed I have lots of duplicates and non-related people listed that I've had to delete.  I'm learning more and more about building an accurate family tree.  It's hard work but I'm enjoying it.  I've learned alot about American History, too, which I've never really been interested in that until now. 
I put together my genealogy crate with all the files and resources.  I can then just take a certain folder of the person I'm working on to the library and hopefully make some discoveries. 
On my agenda this next few weeks is to visit the Family history centers here in Colorado Springs.