I recently went though a similar process; while looking for a hybrid/flat bar road bike, I also tested a handful of drop barred bikes with relatively little experience on them (and, like you, no recent experience).

My only advice is to find a LBS/person that is willing to spend time with you (and you have a good feeling about), and be honest with them about your situation. I had someone walk me through what to expect, how to brake and shift, where to put your hands, etc, and it was a positive experience (even though it confirmed my distaste for drop bars).