~I could help you!~

I am learning English from by contacting peoples and I not didn't go winte to schoole for the language.
My proplem's the grammars and dictation. Who can I improve that with? (or, "How can I improve that?)

Actually, a more natural way of saying it would be...

I am learning English by contacting people on Italki. I didn't go to school for the language.

I'm not good at grammar and dictation. How can I improve that?

Thank you