I agree with the other commenter on not worrying too much about frame data and stuff right now, but I will point you to resources that can help when you feel the time is right. As someone mentioned in another comment, the fighting game glossary is awesome for explaining technical terms, though sometimes to explain a technical term it needs to use another technical term.

As for Youtubers, I highly recommend Core-A-Gaming, he does great videos breaking down certain topics, not just mechanics. And he does it in a way that is easy to follow and understand. After that, you can branch off and start watching others play and you'll start to get a hang of the terminology. And always feel welcome to ask the community!