Hi, everyone.
I let you know how to sign up for Korea yes24 site, please follow this step.
1. Go to www.yes24.com/main/default.aspx
2. Put a tick to ' 모든 약관을 확인하고 전체 동의합니다.'
3. Put a tick to '해외 거주 회원'
4. Check your email and click the email from yes24
5. Go back to yes24 site and click '이메일 인증'
6. Fill in you personal information and click '확인'
7. Click '1:1문의하기' on the bottom of site
8. Click '1:1 문의하기'
9. Select '기타문의' and '본인인증문의'
10. Write down '외국인 회원 본인인증을 신청합니다' on '문의제목' and '문의내용'
Also, attach a photocopy of your passport and click '등록'
After sending a photocopy of your passport, please wait for their reply.
Thank you.