I mostly unstring the whole thing at once.Hold the neck and loosen first the two outside strings and work my way in. Clean the neck and restring <<<>>>Oh one great trick is to pull the string up to its peg-stem and winde the string around the stem {More with the lighter strings less with the heaveis} before puting the string through the hole in the peg.. Pull on the string when tytening.If a string breaks on stage,I've found this method invaluable for restringing in the dark!! For the very frugal if you dont cut the leftover length at the peghead but winde them there may be enough excess to tye the string if it breaks...{Above the peghead ofcource.You could get some strange sounds other-wise ,and some bloody finger-tips}...Ah the frugal musiction!!!