There are two ways to install the flooring - either securing it to the subfloor with glue, or secret nailing
using a floor nailer (available to hire from most hire shops).
One method is secret nailing
, in which you drive panel pins through the tongue at an angle.
A solid oak floor came from an Edwardian country house, 100 years old and still worth having for its high quality and secret nailing
. Oak columns by the front door came from a country house in Kent and the old dining room chandelier from Belgium, via an auction room.