I originally loaded XAMPP so that I could then load Joomla.
Trying to install Joomla with XAMPP running led to a lot of port conflicts.
I turned XAMPP off and loaded Bitnami then loaded Joomla, without the port conflicts.
Now I wonder whether or not to keep XAMPP or Bitnami with Joomla?
Or have I managed to miss the whole point of the exercise?