How do I upgrade from a free account to a paid subscription?

To upgrade to a paid subscription:

• Go to My Account
• You'll see a heading that says My Subscription. Under this heading click on the link that says "Subscribe."
• Choose which account type you want and if you want to pay monthly or yearly, and then click continue.
• You'll be prompted to enter in your payment method. Enter in your credit card information then click continue and you're done.