| Fat Cats Get Down And Eat Bagels - I beleive that circle of fifths is the best way to memorize the key signatures. Someone said that it is not good for minors, but it is. All you have to do is take the major circle of fifths and rotate it (as if it were a wheel) three clicks to the left. (Bassically the minor key sig is 3 notes to the right of the one your on, not counting the one your on) C major has 0 sharps well if you rotate it then A is at the top which is the relative minor whch also has no sharps. Another example G major rotate 3 over and you get E which is G majors relative minor which will be the second in the circle meaning it has 2 sharps
Then you may say, well what f I get to say B and rotate llike you said, that brings me to Ab which is not possible.No sharps and flats in same key and B is sharp key Ab is a flat key Well just use the enharmonic equivalent of Ab which would be G#
I will elaborate further if I'm around sorry if I highly confised you. Everytime I bring this up to someone thay always give me the confused dog look and it makes things worse, but I figured I would throw it out there. | 
