A number of college teachers since the beginning of the 2000s have acquired a wealth of experience in distance teaching. Feel free to consult them when preparing your first online course. Ideally, work as a team so as to obtain support in your preparations. While doing your preps, consider registering one of your colleagues as a participant in your course so as to benefit from their feedback.
If you are using a videoconferencing platform such as VIA, contact their technical support service. They provide online technical guides that are essential resources throughout your course preparation. In addition, if you have a specific question, use their chat service. It is rapid and efficient. An online technician answers your questions in minutes. And the service is free!