Instructors who sell online courses in Udemy create and share 100% off coupon for their courses with us.We apply those Udemy coupons in their respective courses and then share the link with you. So, you can simply click on “Enroll for free” and take any udemy paid course for free from the list of courses given above. You can also earn a Udemy free certificate for the courses that you complete. Generally for Udemy free courses, they don’t provide a course completion certificate. But these are Udemy paid courses which we are getting for free for a limited time, so it is possible to get a Udemy certificate for free.