Here is yet another interesting video on 12 string guitar. How to tune your 12 string guitar.
Tuning is one of the things you should be concern about on instruments such as guitars. And learning to do it may be handy as you can never get rid of it along the way. Although you can always ask the service of professionals, it would always be great if you can do the tuning of your 12 string guitar on your own.
Tuning a 12 string guitar isn't far from tuning a 6-string guitar. Its just that 12 string guitars have 12 strings.
So, here's the video on how to tune your 12 string guitar. Have fun watching.