Don't know about that particular machine, but most scroll saws I have seen seem to hold their blades by gripping the ends in two clamps.. Since blades are made by many different makers for many different saws, I doubt if yours would need special ones. The blades seem to be much like hacksaw blades, made by everyone ,everywhere. .
I don't think there is really too much to know about them, your machine may have a few different speeds, or may not, so I suppose the same rules apply slow for hard stuff, fast for soft stuff, blades, course for soft material, fine for hard material.
I don't think there*s much difficulty about lining up the blades, I think they only fit one way, to cut on the downward stroke.
Sorry I cannot be of more help, but I*m sure there is someone else out there who can.