Is there any good learning resource for kotlin and kotlin script for (gradle)

Hi Kotlin believers. I recently need to use kotlin do some side project. And I found the gradle build script (written in kotlin script) is so confusing. I have never used kotlin before.

Is there any good resource for me to quickly learn some of the basics of gradle build script (kotlin)? Doesn’t matter video or web pages or blogs. My aim is to understand the basics and be able to configure it myself.

Thanks in advance