Where can I learn advanced Kotlin from?

I’ve been a Java developer for many years, and I thought it was to right time to start learning Kotlin.

I found a ton of videos explaining the basics for people who moved from Java to Kotlin, and I was shocked by how impressive this language was.

However, there was a lot of topics, some of which I might not even know about, that are pretty advanced and even if I got the overall idea on how to use them, I want to learn them more in depth.

And I couldn’t find a book/PDF/Videos that explains advanced topics throughout, and shows all the great things Kotlin provides.

Can anyone recommend one that is somewhat close to what I’m looking for?