My Go-to places are:
- Wiki Tree
I have several small places I hit for specialized items like ScotlandsPeople, Fold3, Newspapers, etc. But I also spend a lot of time working the DNA angle on:
I have a free program called Genome Mate Pro on which I have been mapping my chromosome matches. It has been helping me to make sense of my thousands of DNA matches.
My not so favorite website so far is My Heritage and I would like to check out Find My Past to see what they have to offer.
When looking for a specific piece of information, I am not afraid to call cemeteries, companies that have been around for a century (like when I called the New York Met archives), genealogical societies and museums. You never know where a nugget might turn up. And of course, I use Google when I can't think of anywhere else to turn ;)