Usage of OF

[Engrd]

What is the grammatically correct usage of "OF"? sometimes, I get confused with the usage of "OF" and "TO".

Please suggest me the correct usage.

Thanks in advance.... :)

[Tdol]

They're two of the commonest words in the language and are used in many ways- it might make things simpler if we narrow things down by looking at some examples of where you get confused.