Gather new strings, a tuner, wire cutters, and a string winder if available
Loosen each old string until slack
Remove the old strings from the tuning pegs
Remove the old strings from the bridge
Clean the fretboard, bridge, and guitar body
Insert the new string into the bridge
Pull the string through the bridge and secure it
Guide the string to the correct tuning peg
Leave enough slack for winding
Cut excess string if needed
Insert the string end into the tuning peg hole
Wind the string around the peg in the correct direction
Keep the wraps neat and downward
Tune the string to pitch
Stretch the string gently
Retune the string
Repeat for all strings
Check overall tuning and make final adjustments