... when I try to use the link 'find out here how to enable cookies' it says 'Oh crikey we can't find that page'!
To enable Safari cookie storage, launch Safari, then click the Safari menu and choose Preferences...
Another window will open. Choose Privacy, then de-select Block all cookies.
Make it look like this

If that does not fix the problem then something else is wrong. The problem is not Safari. If you disable cookies in Firefox it won't work either. Nor would any other browser if you don't permit them to store cookies. Nearly all websites require them to work.