Remove the old strings
Clean the bridge, nut, and tuning pegs
Identify the correct string order
Insert the first string through the bridge
Secure the string at the bridge
Thread the string through the corresponding tuning peg
Leave a little slack for winding
Wind the string onto the tuning peg
Keep the wraps neat and downward
Repeat for the remaining strings
Tune the ukulele gradually
Stretch each string gently
Retune until stable
Trim any excess string ends