As a beginner, tuning a ukulele is best done with a clip on tuner. These are easy to use, cheap and readily available. Get into the habit of tuning your Ukulele each time you play, that way your ear will become accustomed to how it should sound when it is tuned correctly. Don’t get used to playing an instrument that is out of tune.
Clip on tuners often have the letters U, G, V, B, C showing on the display. These are presets that can be selected.
U – Ukulele. Will only tune notes: G, C, E, A, (Ukulele tuning)
G – Guitar. Will only tune notes: E, A, D, G, B, E (Guitar tuning)
V – Violin. Will only tune notes: G, D, A, E (Violin tuning)
B – Bass. Will only tune notes: E, A, D, G (Bass tuning)
C – Chromatic. Will tune all notes in the music scale.
This short video will show you how to tune a ukulele with a tuner.