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What is Ceramide is: and explain in detail?
1. Simple lipid:

TAG (glycerol + 3 FA)
Ceramide ( Sphingosine + FA) 

2. Compound lipid:

Phospholipids
Glycolipid / Sphingoglycolipid
Aminolipids
Sulfolipids
Lipoproteins

3. Miscellaneous:

Precursor lipid - Compounds that can give rise to another lipids. Eg: Fatty Acids
Derived lipid - Eg: Bile acids
Precursor derived lipid - Eg: Cholesterol