Write 3D course outro, add missing reference labels

getting_started/first_3d_game/05.spawning_mobs.rst

@@ -172,7 +172,7 @@ We want to spawn mobs at regular time intervals. To do this, we need to go back
 to the scene and add a timer. Before that, though, we need to assign the
 ``Mob.tscn`` file to the ``mob_scene`` property.
 
-Head back to the 3D workspace and select the *Main* node. Drag ``Mob.tscn`` from
+Head back to the 3D screen and select the *Main* node. Drag ``Mob.tscn`` from
 the *FileSystem* dock to the *Mob Scene* slot in the *Inspector*.
 
 |image20|

getting_started/first_3d_game/08.score_and_replay.rst

@@ -1,3 +1,5 @@
+.. _doc_first_3d_game_score_and_replay:
+
 Score and replay
 ================
 

getting_started/first_3d_game/09.adding_animations.rst

@@ -1,3 +1,5 @@
+.. _doc_first_3d_game_character_animation:
+
 Character animation
 ===================
 

getting_started/first_3d_game/going_further.rst

@@ -0,0 +1,42 @@
+.. _doc_first_3d_game_going_further:
+
+Going further
+=============
+
+You can pat yourself on the back for having completed your first 3D game with
+Godot.
+
+In this series, we went over a wide range of techniques and editor features.
+Hopefully, you’ve witnessed how intuitive Godot’s scene system can be and
+learned a few tricks you can apply in your projects.
+
+But we just scratched the surface: Godot has a lot more in store for you to save
+time creating games. And you can learn all that by browsing the documentation.
+
+Where should you begin? Below, you’ll find a few pages to start exploring and
+build upon what you’ve learned so far.
+
+But before that, here’s a link to download a completed version of the project:
+`<https://github.com/GDQuest/godot-3d-dodge-the-creeps>`_.
+
+Exploring the manual
+--------------------
+
+The manual is your ally whenever you have a doubt or you’re curious about a
+feature. It does not contain tutorials about specific game genres or mechanics.
+Instead, it explains how Godot works in general. In it, you will find
+information about 2D, 3D, physics, rendering and performance, and much more.
+
+Here are the sections we recommend you to explore next:
+
+1. Read the :ref:`Scripting section <toc-scripting-core-features>` to learn essential programming features you’ll use
+   in every project.
+2. The :ref:`3D <toc-learn-features-3d>` and :ref:`Physics <toc-learn-features-physics>` sections will teach you more about 3D game creation in the
+   engine.
+3. :ref:`Inputs <toc-learn-features-inputs>` is another important one for any game project.
+
+You can start with these or, if you prefer, look at the sidebar menu on the left
+and pick your options.
+
+We hope you enjoyed this tutorial series, and we’re looking forward to seeing
+what you achieve using Godot.

getting_started/first_3d_game/index.rst

@@ -63,5 +63,6 @@ Contents
    07.killing_player
    08.score_and_replay
    09.adding_animations
+   going_further
 
 .. |image0| image:: img/squash-the-creeps-final.gif