basic install instructions

Author: mhaeming

docs/images/install/actions_screen.jpg

@@ -1,3 +1,14 @@
 # Overview
 
-Welcome to the documentation of NLInterface Project!
+Welcome to the documentation of NLInterface Project!
+
+## Are you a tester?
+Checkout the [installation guide](installation/install_from_actions.md) to get the current version running on your Android device.
+
+## Are you a developer?
+Use our [Android Studio Setup Guide](installation/android_studio_setup.md) and [architecture](architecture/overview.md) to contribute new features and fix bugs.
+
+## Are you our supervising professor?
+We are not done yet, please look somewhere else.
+
+![](https://i.imgflip.com/wfenk.jpg?a472104)

docs/images/install/artifact_build.jpg

@@ -0,0 +1 @@
+t.b.d.

docs/images/install/repo.jpg

@@ -0,0 +1,30 @@
+# Install Debug Build from GitHub Actions
+
+You can always install latest version of the main branch directly from GitHub Actions.
+
+!!! warning
+    The latest build on the main branch is considered bleeding edge and will most **certainly contain bugs**!
+    Only use it when you are testing and are fine with the app breaking.
+    
+    For more stabilized versions, use the one of the [official releases](install_from_release.md).
+
+## Prerequisites
+
+- An Android device in [developer mode](https://developer.android.com/studio/debug/dev-options)
+- You are logged into your GitHub account on your device
+
+Open up the repo on your device by following the link 
+
+[https://github.com/StudyProject-NLI/NLInterface](https://github.com/StudyProject-NLI/NLInterface)
+
+and navigate to the **Actions** tab by pressing the three dots button on the right.
+
+![](../images/install/repo.jpg)
+
+Select a successfull workflow run of **Testing APK**
+
+![](../images/install/actions_screen.jpg)
+
+Download the app-debug-build artifact.
+
+![](../images/install/artifact_build.jpg)

docs/index.md

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+# Install from GitHub Release
+
+t.b.d. when v0.0.1 is released.

docs/installation/android_studio_setup.md

@@ -57,4 +57,13 @@ markdown_extensions:
 
 plugins:
   - offline
-  - search
+  - search
+
+nav:
+  - Overview: index.md
+  - Installation:
+    - installation/install_from_actions.md
+    - installation/install_from_release.md
+  - Development:
+    - installation/android_studio_setup.md
+    - architecture/overview.md