Add proper Docker link & some basic usage

Add proper link to the Docker Hub for Docker images.
Include some basic usage for the tools in the Readme.md so that
users can have an immidiate start if they come to the repo first.

README.md

@@ -21,7 +21,33 @@ Installers
 Docker
 ------
 
-You can also use our Docker base images found on http://github.com/dotnet/dotnet-docker to set up your dev or testing environment for usage.  
+You can also use our Docker base images found on https://hub.docker.com/r/microsoft/dotnet to set up your dev or testing environment for usage.  
+
+Basic usage
+-----------
+
+When you have the .NET Command Line Interface installed on your OS of choice, you can try it out using some of the samples on the [main Core repo](https://github.com/dotnet/core/). You can download the sample in a directory, and then do you can kick the tires of the CLI.
+
+First, you will need to restore the packages:
+	
+	dotnet restore
+	
+This will restore all of the packages that are specified in the project.json file of the given sample.
+
+Then you can either run from source or compile the sample. Running from source is straightforward:
+	
+	dotnet run
+	
+Compiling to IL is done using:
+	
+	dotnet compile
+This will drop a binary in `./bin/[configuration]/[framework]/[binary name]` that you can just run.
+
+Finally, you can also try out native compilation on Windows and Linux. **Note:** at this point, only the `helloworld` and `dotnetbot` samples will work with native compilation; in general, only simple applications like hello world will work reliably.
+
+	dotnet compile --native
+	
+This will drop a native single binary in `./bin/[configuration]/[framework]/native/[binary name]` that you can run.  
 
 Questions & Comments
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