Changing guitar strings is thought by many to be a no brainer. Not by me however. Neil describes the way I've changed them for years. It works I change strings this way. Every month or so, more often if I play often I will:1. Loosen all the strings.
2. Cut all the strings off.
3. Clean (and oil with trumpet valve oil once a year) the finger board.
4. Restring with Martin Bronze Lights or Darco New Yorker lights.
5. Retune and play.
I have used Martins or Darco's for 25 years. They are consistant and dependable. I couldn't ask for more.
Don