[OT] An online course in semantics, meaning, and symbolic understanding?

Hi Folks,

I want to take a course in semantics, meaning, and symbolic understanding.  I want to understand better what it means to not have any a priori understanding of something.  Then, I want to try to communicate something meaningful without depending on shared definitions, concepts, or frameworks.

Do you know of an online course that offers this type of instruction?

/Roger