As a student, you can navigate to the Courses tab and choose whichever course fits your style in order to enroll. You can check what courses are free, paid or under subscription by navigating to the course’s page. 

For Free courses, you’ll see a Start Course button right away. Click it and you can immediately start learning. 

If the course is marked as paid then you’ll be prompted to input your billing information after clicking Buy. As soon as the transaction is complete, you’ll be able to start the course.

Last but not least, subscription courses will still need you to input your billing information. However, remember that this is a recurring fee and you’ll be automatically billed for each subsequent month.