additional progress

Signed-off-by: Richard Jones <richard@dagger.io>

docs/learn/1003-get-started.md

@@ -24,13 +24,13 @@ In this tutorial we will learn:
 ## Deploy an Application Locally
 
 The following instructions assume you are working locally, but could just as easily be run on a remote
-machine into which you have a shell.
+machine into which you have a shell. For the sake of brevity and simplicity we will create directories under
+your home directory, but feel free to replace `~/` with a path that works best for you.
 
 ### Install Dagger
 
 First, make sure [you have installed Dagger](../1001-install.md). You can run `dagger version` to ensure
-you have the latest installed and working. For the sake of brevity and simplicity we will create directories under
-your home directory, but feel free to replace `~/` with a path that works best for you.
+you have the latest installed and working. 
 
 ### Create a Dagger Project
 
@@ -53,4 +53,54 @@ Dagger will load all `.cue` files recursively in the current Dagger project. Mor
 
 ### Write a Dagger Plan
 
-A Dagger _plan_ is written in CUE and declaratively expresses the _resources_, _dependencies_, and _logic_ to deploy an application to an environment.
+A Dagger _plan_ is written in CUE and expresses the _resources_, _dependencies_, and _logic_ to deploy an application to an environment. Unlike traditional glue code written in an scripting language (e.g.: Bash, PowerShell), a Dagger plan is _declarative_ rather than _imperative_. This frees us from thinking about order of operations, since Dagger will infer dependendencies and calculate correct order on its own.
+
+First create a directory to hold our plan, separate from our application code:
+
+```shell
+mkdir ./plan
+```
+
+Next, create a file in `plan/` called `todoapp.cue` with the following content
+
+```cue
+package todoapp
+
+import (
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/stream"
+	"alpha.dagger.io/js/yarn"
+)
+
+// Source code of the sample application
+source: dagger.#Artifact & dagger.#Input
+
+// Build the source code using Yarn
+app: yarn.#Package & {
+	"source": source
+}
+
+```
+
+### Create an Environment
+
+```shell
+dagger new local -p ./plan
+dagger list
+```
+
+### Define Input Values per Environment
+
+```shell
+dagger input list
+```
+
+```text
+Input       Value             Set by user  Description
+app.source  dagger.#Artifact  false        Application source code
+```
+
+```shell
+dagger -e local input dir app.source ./app 
+```
+