Creating a Salesforce connector from scratch requires a systematic approach and a solid understanding of the Salesforce platform and its APIs. Here are the key steps to follow:

1. Define the Use Case: Clearly identify the purpose of your Salesforce connector and the systems or services you want to integrate. Understand the specific requirements and objectives you aim to achieve through the connector.

2. Familiarize Yourself with Salesforce APIs: Study the Salesforce API documentation to gain a comprehensive understanding of the available integration options. Determine whether you should use REST or SOAP APIs based on your use case.

3. Set Up a Salesforce Developer Account: Create a Salesforce developer account to access the necessary tools and resources. This account will provide you with a sandbox environment for testing and development purposes.

4. Obtain Required Credentials: Generate the required credentials, such as client ID and client secret, to authenticate your connector with Salesforce. This may involve creating a connected app within Salesforce and configuring the necessary OAuth settings.

5. Implement Authentication and Authorization: Incorporate the appropriate authentication mechanism, such as OAuth 2.0, to securely connect your connector with Salesforce. Handle the authorization process to obtain an access token for making API requests.

6. Develop Connector Code: Start building the connector code using your preferred programming language. Utilize the Salesforce APIs to establish the connection, retrieve data from external systems, and push data into Salesforce or vice versa. Implement error handling and logging mechanisms to ensure robustness.

7. Handle Data Mapping and Transformation: Ensure that data formats and structures align between Salesforce and the connected system. Implement logic to map and transform data appropriately during the integration process.

8. Test Thoroughly: Set up comprehensive testing scenarios to validate the connector's functionality. Perform unit tests, integration tests, and end-to-end tests to ensure data consistency and accuracy. Consider edge cases and handle exceptions effectively.

9. Document Your Connector: Create clear and detailed documentation for your connector, including setup instructions, configuration options, and API usage guidelines. This will help users understand how to utilize your connector effectively.

10. Deploy and Iterate: Deploy your connector to a production environment once you are confident in its stability and performance. Continuously gather feedback from users and iterate on the connector to address any issues or add new features as needed.

Remember to follow best practices for security, error handling, and performance optimization throughout the development process. Additionally, leverage resources such as Salesforce Trailhead, forums, and developer communities to seek guidance and learn from the experiences of others.