Better tutorials for the engine API?

My title says it succinctly. Is there anywhere where the API tutorial gives more clear advice on how to create a simple instrument plugin? Currently working out how to create a simple osc instrument with volume and hz params. Looking at the examples helps a little but the api documentation implements code way too differently than in the examples. So I feel like I’m mostly running in the dark here. No videos at all? I’ve been scouring the internet but no avail. Is there any good reason for why this tutorial has had not the same treatment as the tutorials for implementing events in various engines?