Ancestry DNA 

Uncover your ethnic mix, discover distant relatives, and find new details about your unique family history?.
dna.ancestry.com

23andMe  

DNA Genetic Testing and Analysis 
www.23andme.com

Family Tree DNA 

Genetic Testing for Ancestry, Family History 
www.familytreedna.com/

Our Black Ancestry African American Genealogy DNA
The OBA DNA System enables you to make connections with people who share your DNA by entering the surname related to your DNA test, information about your test parameters, and a link to your family tree. http://www.ourblackancestry.com/dna/

GEDMATCH 
http://www.gedmatch.com/
Gedmatch is a free non-profit utility website with a subscription add-on called Tier 1. DNA testers can upload DNA test results from AncestryDNA, FamilyTreeDNA and 23andMe to compare with a large existing database of test results.

Your DNA Guide

https://www.yourdnaguide.com/

DNA webinars and information.