Waiting for your DNA test results to come back can remind you of being a kid on Christmas eve again. It just seems like you'll never get that e-mail stating that they are ready. But they will be ready some day, and what are you going to do with the results? How can you use your DNA to help with your work on your family tree... and what dangers are awaiting you? 

Good online sources for DNA work: 

DNAPainter

ISOGG Wiki (International Society of Genetic Genealogy)

GEDMatch.com (another site where you can upload your data and get matches)

Genealogy Junkie DNA Tips

DNAeXplained - Endogamy 

Board for the Certification of Genealogists - DNA Resources

FamilyTreeDNA Blog