diff --git a/docs/source/basics.rst b/docs/source/basics.rst
new file mode 100644
index 0000000..0554d66
--- /dev/null
+++ b/docs/source/basics.rst
@@ -0,0 +1,21 @@
+Basic usage
+----------------------------------------
+In order to compute audio features regarding a certain track, you just have to
+create an instance of your desired track object and then call its
+:code:`extract()` method with the path to an audio file. Considre the following
+example:
+
+.. code-block:: python
+
+   from comsar.tracks import TimbreTrack
+
+   tt = TimbreTrack()
+   res = tt.extract('path/to/my_audio.wav')
+   res.to_pickle('my_features.pkl')
+
+The first line imports the desired Track object, in this case a
+:code:`TimbreTrack`. The third line creates a :code:`TimbreTrack` instance
+with the name :code:`tt`. The fourth line calls the :code:`extract` method of
+:code:`tt` and passes it the path to an actual audio file. comsar then
+processes the audio file and makes the results available under the name
+:code:`res`. The fifths line eventually saves the results to disc.
diff --git a/docs/source/index.rst b/docs/source/index.rst
index e33f8ed..96d916c 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -1,20 +1,34 @@
-.. comsar rtd test documentation master file, created by
-   sphinx-quickstart on Tue Apr 20 15:10:22 2021.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
+.. COMSAR documentation master file, created by
+   sphinx-quickstart on Fri Feb 19 07:54:14 2021.
 
-Welcome to the rtd-config-test documentation!
-==============================================
+Computational Music and Sound Archiving
+=======================================
+The Computational Music and Sound Archiving system provides high-level audio
+feature extraction facilities for multi-viewpoint music similarity analysis.
 
-.. toctree::
-   :maxdepth: 2
-   :caption: Contents:
+Music similarity is hard to analyse. A viewpoint highlights certain aspects of
+musical perception. Asking for similarity regarding pitch requires another
+viewpoint than asking for rhythm similarity.
+
+COMSAR combines pre-selected low-level audio features to *Track*
+objects, which represent a viewpoint.
 
 
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents
+  
+   install
+   basics
+   tracks
+   
+   
+Open source
+----------------------------------------
+comsar is an open source project. It is published under the permissive `BSD
+3-Clause License`_. You may change and republish the code for any personal or
+commercial project. The `comsar source code`_ is available on GitHub.
 
-Indices and tables
-==================
+.. _BSD 3-Clause License: https://opensource.org/licenses/BSD-3-Clause
 
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`
+.. _comsar source code: https://github.com/ifsm/comsar
diff --git a/docs/source/install.rst b/docs/source/install.rst
new file mode 100644
index 0000000..a9f6239
--- /dev/null
+++ b/docs/source/install.rst
@@ -0,0 +1,29 @@
+***************************************
+Installation
+***************************************
+
+
+Installation from PyPi
+========================================
+comsar is available on PyPi. Simply run the following command in your favorite
+terminal emulator::
+
+   pip install comsar
+
+
+Installation from source
+========================================
+Installation from source is done in two steps:
+
+* If you do not have git installed, simply navigate to the source code
+  repository, click on the green "Code" button and then select "Download ZIP".
+  Otherwise, clone the source code with git::
+
+   git clone https://github.com/ifsm/comsar
+
+
+* Once the code is downloaded, change to the comsar root directory and advise Python to install
+  the pacakge::
+  
+   cd path/to/comsar
+   python3 -m pip install .
diff --git a/docs/source/tracks.rst b/docs/source/tracks.rst
new file mode 100644
index 0000000..0413900
--- /dev/null
+++ b/docs/source/tracks.rst
@@ -0,0 +1,19 @@
+****************************************
+Track sytem
+****************************************
+
+PitchTrack
+========================================
+
+RhythmTrack
+========================================
+
+TimbreTrack
+========================================
+
+.. autoclass:: comsar.tracks.TimbreTrack
+   :members:
+
+FormTrack
+========================================
+Implementation of the FormTrack is planed.