How to learn any course in Coursera for free including ones from the Deep Learning Specialization?

First click on the Deep Learning Specialisation link. This should bring you to the page shown below:

Click on the Courses page to go to the 5 courses in this specialisation.

Click any of the courses that interest you. I am going to click on Course 2: Improving Deep Neural Networks. This brings me to the following page.

Click on the Enrollment Options tab as shown above.

Click on the big blue button that says Enroll for Free.

Click the small blue button at the bottom of the screen that says “Audit the course”. There you have it, your gateway to the world of Deep Learning.

Enjoy your self-paced learning!