word meaning - What is the difference between "some" and "little"

What is the difference between "knowing little knowledge" and "knowing some knowledge"? I'm confused.

At the afternoon club, the speaker talked about 'how fairy tales began'. This is a very interesting subject. For me, I am not in the category "I have NO knowledge of the subject matter" but I am in the category of having some knowledge of the subject matter ie I know how fairy tales began. Which is a better description?