hello, Khan.

 Hello, I'm one of students in South Korean.

I recently get to know about this site and I'm using this site so well by now. 

It's so good to learn things in English. :)

And I've got some questions. 

As I'm high school student in Korean, can you tell me what subjects are suitable to me?

I'd like to learn math and science (especially bio and chemistry) .. to prepare IELTS. 

There are so many kinds of math lecture so I could't find fitted one. 

Thanks for reading this! .. and sorry for my short English..//