#1
I recently bought a refurbished Yamaha FGX730SCA Acoustic/Electric. It has a built-in tuner, but I have no idea how to use it. There was no manual or book.
#3
On my Yamaha (different model) there's a little round black button. If you press it, the battery light will flash once. Then play a string, and an arrow will appear telling you to flatten or sharpen the note. Both arrows will light when it's in tune.

Check the battery's not dead first
#4
It's easier to learn to tune your guitar.
Acoustic Percussion Guitar Player
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