A modern programming language that makes developers happier.

kotlinlang

A good book about kotlin
Kotlin In-Depth book provides reader a very clear and simple guide to the basics of Kotlin language. Along with telling the reader about usual moments, there are great "Java vs Kotlin" blocks, showing unobvious details that differ Kotlin not only from Java, but from every C-style languages. Book contains explaining examples, but many of em aren't somehow highlited so it is sometimes difficult to read the code without indents. However, book provide all necessary information for programmer familiar with C-style languages to start coding Kotlin.
This book is a very good choice for starting learning Kotlin. Also, it is possible to use it as a handbook to quickly remember some details.
Warning: it is only the first part of book, themes like coroutines are consecrated in second part.
<https://books.google.ru/books/about/Kotlin_In_Depth_Vol_I.html?id=MVDNDwAAQBAJ&amp;redir_esc=y>