1. Visit the OpenAI Sign Up page.
2. Create an account or log in to your existing account.
3. Navigate to the API keys section in your account dashboard.
4. Click on the "Create new secret key" button to generate a new API key.
5. Copy the API key and store it in a secure location.
6. Now that you have your own API key, navigate to the settings page and paste it in the corresponding box.

Remember to keep your API key confidential and do not share it publicly.