can anyone recommend any good kotlin books or resources for already experienced programmers? i don't want someone to teach me what is if/else, i would like to get a good overview of existing language features and patterns

Effective Kotlin

thx, looks greate

If you're knowledgeable with Java, the “differences between Kotlin and Java” page on the official website is perfect. Using that page, I learned the most common Kotlin aspects in a day or two.