Hi Soham,

All courses on the site are accessible to all users without needing to sign-up or enter a code. You can access your course via the Courses dropdown menu in the top right corner of the site.

If you are using Khan Academy in a school setting and have a teacher, then your teacher may provide you with a class code so that they can view your progress. Khan Academy is not able to provide you with a teacher or a class code.

I hope this helps! Please let me know if you have any additional questions!