This is a treasure trove of migration patterns for Irish and Scots. You have to look past the fact they call Scots, Scotch. There was a time when this was an acceptable term. This is an excellent resource.
Using the DAR (Daughters of the American Revolution). In their Ancestor Database, the simple-style search form has you place a surname and given name for an ancestor who might have served in the military or as a civilian during the American Revolution.
Guide to Finding German Ancestors: Many German ancestors did not reside in present day Germany. Boundaries have fluctuated & the hardships associated w/ political power changes sometimes caused Germans to settle in non-Germanic neighboring countries.
Top 25 Tips for Finding Your Colonial Ancestors Web Seminar Download