Best resources for learning Gradle build tool [closed]

What are the best resources available to learn Gradle build tool from basic level?

Is Gradle difficult to learn?

Gradle, the build automation tool for multi-language software development that is widely used for Android is notoriously difficult to use.

Why does Gradle build take so long?

Check your Internet connection. If internet speed is very slow gradle build will also take long time to build. I check by change my wifi internet connection with another one good speed connection. Now build time is normal.

Gradle user guide is by far the best resource. You can start off by looking at the "Getting Started" chapter, it has a lot of good pointers to get you started with basic setup and build script basics.

Building and Testing with Gradle (from http://gradle.org/books/) is also worth a read for a high level overview of some options of what you can/may want to do. Not nearly as comprehensive as the user guide but a good introduction.