Beelzebob,
Notice the second quote at the bottom of my posts... it's meant to be sarcastic. All of us are learning here. If anyone is laughing at you, they've just forgotten how it was when they were starting out. At some point everyone had to learn the difference between an LPS and a softie, and EVERYONE has paid too much for something along the way.
Now for a little helpful info:
LPS -- Large Polyp Stony (These corals have large polyps and build hard/stony calcium carbonate skeletons)
SPS -- Small Polyp Stony (These corals have small polyps and build hard/stony calcium-carbonate skeletons)
Softies -- in general, any coral that doesn't build a hard skeleton; although sometimes it's used to refer to a specific subset of such corals.
FWIW, these labels have little meaning outside the aquarium hobby. Scientists usually do not use them.
HTH,
Mariner