Coroutines
KotlinConf 2018, Exploring Coroutines in Kotlin by Venkat Subramaniam https://youtu.be/jT2gHPQ4Z1Q
Async Operations with Kotlin Coroutines (Part 1 and 2) by Mayowa Adegeye http://bit.ly/2KorsUO
Follow Roman Elizarov on Twitter @relizarov and Medium https://medium.com/@elizarov
Conventions
Kotlin in Action, Chapter 7: Operator overloading and other conventions
Improving readability using operator conventions in Kotlin http://bit.ly/2ShxREi
DSLs
Kotlin in Action, Chapter 11: DSL Construction
KotlinConf 2018, Creating Internal DSLs in Kotlin by Venkat Subramaniam https://youtu.be/JzTeAM8N1-o