Experience isn’t mandatory, but evidence of your ability to teach the subject/skill is required. During sign-up, you must upload qualifications that prove your competence (e.g., a course certificate, university degree—Bachelor’s/MSc/PhD—relevant work experience, or other credentials). 
You’re responsible for the accuracy and authenticity of all documents you upload, as stated in our Terms & Conditions. Applications that claim expertise without evidence may be rejected. 
See also: How to join as an Instructor (video) & Instructor sign-up guide.