Hi!!! I'am just starting and I just cant tune. I have an electronic tuner( a cheap chinese one without any manual or whatsoever) and I cant figure out how to tune it. There is a little needle which fluctuates between the rannges of -440hz to <+450hz. Can some one please tell me how the strings should be tuned using this tuner and can i also tune an acoustic guitar with this sorta electronic tuner? Thanks for the help folks.