Student or Learner
WHAT IS CORRECT I AM NOT SURE OF OR I AM NOT SURE ABOUT ?
FOR EXAMPLE: I AM NOT SURE OF THE ANSWER.
I AM NOT SURE ABOUT THE ANSWER.
Both can be correct, but their meanings differ.
I'm not sure of the answer = I don't know the answer to the question I am facing, I can't decide between possible choices.
I'm not sure about the answer = I have the answer, but I don't know what to think about it. (I don't know whether it's a good answer or not, I can't decide whether I should be happy or sad, etc.)