Glad to see that you're keeping up with this blog! Lots of great research tips here!
I have researched in courthouses in Ohio, Pennsylvania, New York, Kentucky, Virginia, West Virginia, Tennessee and Colorado, starting with Appalachian Basin oil and gas work, leases, rights-of-way and title cleanup, continuing with genealogical research, marriages, probate, partition deeds and now working through various government and county web sites. As record availability has evolved so has my research. My genealogical strengths, in addition to courthouse research, are census, newspapers, migration, getting started, project management and brick walls.