Richard wrote...
....
. . . Can you recomend a good book that goes into detail and gives
examples of what they're trying to explain? Thank you, again.
....

Not really. John Walkenbach's Excel formulas book may be OK, but I've
only read his Excel VBA programming book, which was pretty good. And I
doubt there's any book that covers QP/123 to Excel transition problems
to any extent.