To upgrade to a Premium Plan, please follow these steps:

1. Make sure your email address is verified. You must verify your email before purchasing any packages.
2. Click on the Store icon in the top-right corner of the page.
3. Select the Premium Plan and click on Explore Plan.
4. Choose your Level and Subject.
5. Review the subject details and click Buy Package.
6. Enter your card details and complete the payment process.
7. Once the payment is successful, your Premium resources will be activated automatically.