Congrats! After you sign up for a membership, go to English Courses and pick the course you want to learn.
When you open any course, you will see (Get Course) on the right top of the page.
Click the green button, and you will see three options:
Click Enroll with Membership, you will see a new window coming down.
See how many courses are left on your membership; it will appear on that red box window. Then click Enroll to start the procedure.