FindaGrave has some incredible research I never would have uncovered, but take heed, I've also found Ancestry.com creeping in here with less than stellar research and records.
I began researching my genealogy using the research of my grandparents. I found some errors and corrected these and marched on with my research. Been at this for probably over 20 years depending on how you want to calculate it. I find genealogy is just a puzzle, and the only way to solve it is with evidence.
I am a retired U.S. Army, Ranger and Special Forces Team Sergeant (Green Beret).