I would recommend Kotlin in action by Dmitry Jemerov and Svetlana Isakova: manning.com/books/kotlin-in-action
It's a very nice book.
As you are reading the book, you could also practice and play with Kotlin Koans:
Kotlin Koans are a series of exercises to get you familiar with the Kotlin Syntax.
Finally, you could also check out the Kotlin Documentation from time to time. When learning I always love checking the Docs.
Thank you so so much for your links and recommendations.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.