When
changing guitar strings,
it is best to change them one at a time starting with the thickest.
This keeps the tension on the instrument and you will have less trouble
getting it in tune because
the guitar doesn't have to stabilize again.
I have
had a few people disagree with this but unless you have to remove all
the strings to clean
or oil the fretboard, I belive this is best from personal experience.
Bob, Gman ( o )==#