When starting with an analysis of DNA matches, it can be tempting to work on solving that “brick wall” problem right away.
That might be a mistake. Two good approaches are to sort out the low-hanging genealogical fruit–those matches that are easy to figure out. This should be done even if the family some of these matches are related on are not the “brick wall” family. The other approach is to sort out matches on those families where you already “know everything.” This can be a good way to improve your DNA analysis skills in order to help you work on your true brick wall.