The easiest way I found was in the footprint editor,
scroll through the Kicad libraries on the left,
highlight the footprint you wish to copy
File > Save As
keep the name, scroll through the list of libraries 'till you find your personal libtary in which you wish to place the footprint, highlight
Save.
Close the Kicad footprint
Open your newly saved footprint in your personal library
Change the anchor
Save.
Much quicker to do than read or type. 
Just take a little time set up your libraries first. Changing libraries later is a PITA.
There are a few ideas in this and this other FAQ.