As of my last update in September 2021, the exact interface of ChatGPT might vary depending on the platform or product offering by OpenAI. However, I can provide some general guidelines on how to familiarize yourself with the typical ChatGPT interface:

1. Access the Platform: Log in to your OpenAI account and navigate to the section or page where ChatGPT is accessible. This could be a dedicated web application, an API integration, or any other interface provided by OpenAI.
2. Read the Documentation: OpenAI usually provides documentation and user guides for using ChatGPT. Take the time to read through the documentation to understand the features, capabilities, and limitations of the model. This will help you make the most of your interactions.
3. Input and Output Panes: The ChatGPT interface typically consists of two main panes – an input pane and an output pane. In the input pane, you enter your text prompts or messages for the model. In the output pane, you receive the generated responses from ChatGPT.
4. System Messages: Some interfaces allow you to use system messages at the beginning of the conversation. These system messages set the behavior of the model or provide context for the conversation. Using system messages can help guide the model’s responses.
5. Contextual Conversations: ChatGPT maintains context during a conversation. As you continue interacting with the model, it remembers previous messages and uses them to generate relevant responses. Keep this context in mind while formulating your prompts.
6. Experiment with Instructions: You can experiment with different instructions and prompt engineering to get more accurate and relevant responses. Adjusting the way you phrase your queries can lead to better results.
7. Explore Options: Some interfaces might offer additional options for customizing your interactions with ChatGPT, such as adjusting temperature for response randomness or setting a maximum token limit for response length. Explore these options to optimize your experience.
8. Saving Conversations: If the platform allows it, consider saving your conversations with ChatGPT for future reference or for continuing a discussion later.
9. Provide Feedback: As you use ChatGPT, consider providing feedback to OpenAI. This feedback can be valuable for improving the model and addressing any issues that users encounter.

Remember that the interface might change over time, and new features could be introduced by OpenAI. For the most up-to-date information on how to use ChatGPT and navigate its interface, refer to the official documentation or guidelines provided by OpenAI when accessing the platform.