WORDPRESS SPAM?

I have just started my new Literary Blog on WordPress. I began it June the 4th.

Already I am receiving some comments that WordPress is declaring spam.

How though do I know which such comments are real spam and which might be legitimate comments to which I should reply? I mean some such comments are obviously spam, but other comments are not so easy to classify one way or the other.

Is there a trick or method for understanding which are legitimate comments and which are spam?

If any of you have experience in this matter or have a technique that works well for you then I’d be happy to hear it.

Thank you for your help.

Jack.