I'm very interested in speech to text - but like tricky dialects and use of various terminologies but I'm still confused as to where to start in the best possib

I'm very interested in speech to text - but like tricky dialects and use of various terminologies but I'm still confused as to where to start in the best possible place, in order to train the models with a huge database of voice samples I own. Any ideas from the HN crowd currently involved in speech 2 text models?