Make the main README more informative (#14)

Co-authored-by: Michael Ingeman-Nielsen <[email protected]>

README.md

@@ -2,51 +2,85 @@
 
 ![alt-text](https://jaxenter.com/wp-content/uploads/2016/06/Screen-Shot-2016-06-06-at-2.56.13-PM.png "Gradle logo")
 
-### Learn Gradle with these interactive katas
+## Quick start
 
-Task creation
- - task-creation - Add a simple task and execute it
+### In the Cloud
 
- - build-phases - Creating dependent tasks and ordered execution
+[![Open in Cloud Shell](https://gstatic.com/cloudssh/images/open-btn.svg)](https://console.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https://github.com/praqma-training/gradle-katas.git)
 
+### On Your Local Machine
 
-Properties
- - configuring-properties - Different ways of passing properties to the build
+You need to have Java and Gradle installed to run these katas. Follow the intallation guides for each product:
 
- - checking-properties - Verifying and using passed properties
+- **Java**: [adoptopenjdk.net](https://adoptopenjdk.net/)
+- **Gradle**: [gradle.org](https://gradle.org/install/)
 
-Task Flow
- - task-execution-order - Instructing your tasks to run in certain order
+You can check your installation with the following command:
+```
+$ gradle -version
 
- - task-dependencies - Creating a DAG (directed acyclic graph) out of your tasks
+------------------------------------------------------------
+Gradle 6.1
+------------------------------------------------------------
+...
+```
 
+To work through the katas, you need to clone this repository locally.
+For each exercise, you will then
 
-Skipping task
- - incremental-tasks - Defining build-input and output
+- Go into the folder with the exrecise you want to work on
+- Run the `setup.sh` script
+- Consult the README.md in that folder to get a description of the exercise
 
- - skipping-execution - Conditional execution of tasks
+These katas are designed to run under Bash, so they should be straight forward to run on MacOS or most commont Linux distributions.
+For windows users, we recommend using [Windows Subsystem for Linux (WSL)](https://docs.microsoft.com/en-us/windows/wsl/install-win10).
 
+## Purpose of Gradle Katas
 
-Task types
- - built-in-task-types - Experiment with a variety of built-in types
+This repository is a collection of Gradle exercises.
+The concept is stolen without shame from [Schauderhaft.de](http://blog.schauderhaft.de/gitkata/).
+
+The exercises are designed for use when we are teaching Gradle courses. You should be able to use them as self-contained exercises that will allow you to keep your Gradle skills sharp.
 
- - custom-task-types - Defining custom re-usable types.
+Feel free to use these exercises, that's why they're public!
+
+## Suggested Learning Path
+
+Task creation
+ - [task-creation](./task-creation/README.md) - Add a simple task and execute it
+ - [build-phases](./build-phases/README.md) - Creating dependent tasks and ordered execution
+
+Properties
+ - [configuring-properties](./configuring-properties/README.md) - Different ways of passing properties to the build
+ - [checking-properties](./checking-properties/README.md) - Verifying and using passed properties
+
+Task Flow
+ - [task-execution-order](./task-execution-order/README.md) - Instructing your tasks to run in certain order
+ - [task-dependencies](./task-dependencies/README.md) - Creating a DAG (directed acyclic graph) out of your tasks
+
+
+Skipping task
+ - [incremental-tasks](./incremental-tasks/README.md) - Defining build-input and output
+ - [skipping-execution](./skipping-execution/README.md) - Conditional execution of tasks
+
+
+Task types
+ - [built-in-task-types](./built-in-task-types/README.md) - Experiment with a variety of built-in types
+ - [custom-task-types](./custom-task-types/README.md) - Defining custom re-usable types.
 
 
 Plugin
- - applying-plugins - Looking into available plugins
+ - [applying-plugins](./applying-plugins/README.md) - Looking into available plugins
 
 
 Task rules and dynamic tasks
- - task-rules - Dynamic task content
-
- - dynamic-task-creation
+ - [task-rules](./task-rules/README.md) - Dynamic task content
+ - [dynamic-task-creation](./dynamic-task-creation/README.md)
 
 
 Artifact handling
- - publish-artifact - How to share your artifact. Group, name and version practices.
-
- - resolve-artifact - Compile code using the artifact as a dependency
+ - [publish-artifact](./publish-artifact/README.md) - How to share your artifact. Group, name and version practices.
+ - [resolve-artifact](./resolve-artifact/README.md) - Compile code using the artifact as a dependency
 
 Extras
- - promoting-artifacts-example
+ - [promoting-artifacts-example](./promoting-artifacts-example/README.md)