"think of" vs "think about"

[Hieupt]

Hi buddies,

As far as I know that [think of] to use for something new, like 'make up' or 'invent', but [think about' to use for something existed. Am I correct.

Please help to clarify the difference between [think of] and [think about] in advanced.

Please also help on the following question:

[Alan]

Hi,

'Think of' often has the idea of expressing an opinion when used as a question: What do you think of my new car? = What is your opinion of my new car?

'Think about' suggests giving consideration to when used as a question: What do you think about my idea of buying a new car?

Alan
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[Hieupt]

Got it! Thanks for your answer, Alan!
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Thank you very much,
Hieu Phan.

P/s: Please just correct if I'm wrong somewhere!