zOMG NOOB!!!
hahahaha. For that many posts, you sure like to ask basic questions sometimes .
Anyway, direction for hard/soft & raise/lower should be obvious when you have the actual piece in hand (raise/lower depends on which way it is threaded - usually turning it to the right facing as the coilover as in the picture will lower the car; and H/S depends on the damper, but USUALLY it is right = harder).
SPL explains it best:
http://www.splparts.com/doc/SPLCoilover/default.htm
The only good thing is at least you asked, I guess... there are a couple threads floating on this forum where members adjusted height purely by the spring compression, then complain that the coilover is super bouncy/harsh...
zOMG NOOB!!!