Looking for recommendations and criteria for a reliable Online Shia Quran Academy

I'm trying to find a trustworthy online Quran school that specializes in teaching Shia Islam. I'd like to know what requirements I should check before signing up. Specifically: How can I confirm the legitimacy of the credentials of the teachers? For Tajweed and Tafseer, are there any prominent forums that adhere to the Shia school of thought? What general guidelines apply to the costs and schedules of these academies? Any suggestions or guidance in selecting the best one would be greatly valued. Alhamdulillah.