showing the most recent database entry first

How would I go about showing the most recent database entry first then
to the next most recent.... currently it is shown in chronological
order

When you do the find that gets the records (in the controller index
action normally) just add an order clause to the search. See the
Rails Guide, Active Record Query Interface, on how to do it. If you
want *always* to sort this model in that order then do it in a
default_scope method in the model.

Colin