How to Produce Tone Correctly?

For producing tone correctly, that's your own... probably for any of these phonetic things, you just have to get a little deeper into it. Maybe language you're not interested necessarily in learning but provides a gateway to learning about that. But I had less good luck trying to find information about Yoruba online. And everybody on the internet is making Chinese lessons either free or for pay. So it just sort of depends on where you want to go with things.