Our checkout page can be accessed by clicking on Upgrade Subjects in our Course Library, any subject page, or the pricing page.
Once you select Upgrade Subjects, you should see this page:
Purchase your desired subject by following these steps:
Select the subjects you would like to upgrade and the duration of your subscription. Use the left-hand side sidebar to navigate between courses in the library.
When you have all the courses you want, click Checkout on the banner at the bottom of your screen.
Fill in your payment information and click Complete Checkout.
Note: Upgrades last for either 1, 6, or 12 months from the day of purchase.