How do I determine the age and value of a Yamaha FG312II 12-string guitar? I tried to enter the serial number through the Yamaha Web Site and it said that it was invalid #. Anyone familiar with this guitar?

Okay.. here's the thing: I have an electric guitar on me with a mini-amp and I love playing with it but I want to learn how to actually play it. After repeated 'playing' I have learned the strokes and fingering a little bit on my own but without some theoretical understanding, I don't seem to...

I am looking to buy a motorcycle,and I was wondering is their a difference between a yamaha yzf r6,and a yamaha r6,and if so what?