Added a small install guide to the README

Makefile

@@ -19,7 +19,11 @@ isort-check:
 	isort -c -rc $(APP_LIST)
 
 loaddata:
-	./manage.py loaddata core/fixtures/testdata-*
+	./manage.py loaddata core/fixtures/testdata-groups.json
+
+loadexamples:
+	./manage.py loaddata core/fixtures/testdata-core.json
+	./manage.py loaddata core/fixtures/testdata-user.json
 
 install:
 	pip install -r requirements.txt

README.rst

@@ -5,6 +5,38 @@ Grady - will correct you!
 The intention of this tool is to simplify the exam correcting process at the
 University of Goettingen. It is deployed as a Django web application.
 
+Installing
+==========
+
+To set up a new instance perform the following steps:
+
+#. Create a virtual environment with a Python3.6 interpreter and activate it.
+#. Install dependencies::
+
+    pip install -r requirements.txt
+    yarn install --modules-folder core/static/node_modules
+
+   or alternatively with the make task::
+
+    make install
+
+#. Set up the database.
+
+   If you are running a local instance for development purposes you
+   may just run::
+
+    python manage.py migrate
+    python manage.py loaddata core/fixtures/testdata-groups.json
+
+#. Create a superuser if necessary::
+
+    python manage.py createsuperuser
+
+#. Your instance should now be ready to be filled with real data. If you just
+   need some basic examples you can load them with::
+
+    make loadexamples
+
 Overview
 ========