diff --git a/doc/install.rst b/doc/install.rst
index b39f71674..3af60dad5 100644
--- a/doc/install.rst
+++ b/doc/install.rst
@@ -1,9 +1,11 @@
 :orphan:
 
 Installing Sphinx
-=================
+==================
 
-Sphinx is available as a package on the `Python Package Index
+Sphinx is written by Python, you need to install Python and Sphinx.
+
+Sphinx package is available as a package on the `Python Package Index
 <http://pypi.python.org/pypi/Sphinx>`_.
 
 You can also download a snapshot from the Mercurial development repository:
@@ -12,4 +14,153 @@ You can also download a snapshot from the Mercurial development repository:
   file or
 * as a `.zip <https://bitbucket.org/birkenfeld/sphinx/get/default.zip>`_ file
 
-.. note:: A detailed installation and setup guide is in preparation.
+There is introductions for each environments:
+
+.. contents::
+   :depth: 1
+   :local:
+   :backlinks: none
+
+
+Install by your own
+--------------------
+
+If you use system installed Python or build your own Python, you can
+use that python to install Sphinx. The actual command list is same as
+these install.
+
+* `Install easy_install command`_
+* `Install Sphinx`_
+
+
+Debian/Ubuntu: Install Sphinx using packaging system
+-----------------------------------------------------
+
+You may install using this command if you use Debian/Ubuntu.
+
+.. code-block:: bash
+
+   $ aptitude install python-sphinx
+
+
+Mac OS X: Install Sphinx using MacPorts
+----------------------------------------
+
+If you use Mac OS X `MacPorts <http://www.macports.org/>`_ , use this
+command to install all software.
+
+.. code-block:: bash
+
+   $ sudo port install py27-sphinx
+
+However, the execution path is not added, use select command to use
+Python2.7 as default.
+
+.. code-block:: bash
+
+   $ sudo port select --set python python27
+   $ sudo port select --set sphinx py27-sphinx
+
+Type :command:`which sphinx-quickstart` to check the installation.
+
+
+Windows: Install Python and Sphinx
+-----------------------------------
+
+Intall Python
+^^^^^^^^^^^^^^
+
+Almost every Windows user do not have Python, we begin Python
+installation. If you already install python, please skip this section.
+
+Go to http://python.org . This site is a headquarter of the
+Python. Look at Left sidebar and "Quick Links", Click "Windows
+Installer" to download.
+
+.. image:: pythonorg.jpg
+
+.. note::
+
+   Currently, Python has two version, 2.X and 3.X. Sphinx-1.2 can
+   run under Python-2.5, 2.6, 2.7, 3.1, 3.2, 3.3.
+   You may get some advice from ML or other places.
+
+   This chapter assumes Python-2.7.
+
+
+Follow the normal Windows installer, the Python install will be completed.
+
+.. image:: installpython.jpg
+
+After installation, you have better to add PATH to the Environment
+Variable in order to run Python from Command Prompt.
+
+* Right-Click the My Computer Icon and open Property Dialog
+* Click Environment Variable button under detail tab
+* Edit and add the path to the system variables PATH 
+
+Add these variables. This is for Python-2.7. If you use another version
+of Python, change the "27" number. Add these pathes separeted by ";".
+
+.. list-table:: Adding PATH
+   :widths: 10 40
+   :header-rows: 1
+
+   * - PATH
+     - description
+   * - C:\\Python27
+     - Folder which includes Python Command
+   * - C:\\Python27\\Scripts
+     - Folder which includes easy_install (described later) or sphinx commands
+
+Run **Command Prompt** or enter ``cmd`` to the "search program and
+files" text box. After command prompt window appear, type
+``python[Enter]``. If you can get installed python version and prompt
+about ``>>>``, the Python installation is succeeded.  Enter ``Ctrl+Z``
+key to quit.
+
+
+Install easy_install command
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Python has very useful :command:`easy_install` command which install 3rd
+party library.
+
+* http://pypi.python.org/pypi/distribute
+
+easy_install downloads and install software which you want to need by only
+one command.
+
+
+Save http://distribute.org/distribute_setup.py link by Right-click.
+Some browsers can download just open the URL.
+If you can read the file iteslf, calm down, Right-click and choose "Save".
+
+After download, invoke command prompt, go to the distribute_setup.py saved
+directory and run this command:
+
+.. code-block:: bat
+
+   C:\> python distribute_setup.py
+
+Now :command:`easy_insall` command is installed. OK, Let's go to the Sphinx
+install!
+
+
+Install Sphinx
+^^^^^^^^^^^^^^^
+
+If you finshed easy_install install, for the rest is just a moment.
+Type this line.
+
+.. code-block:: bat
+
+   C:\> easy_install sphinx
+
+After installation, type :command:`sphinx-quickstart` on the command
+prompt. If you get interactive messages which starts with
+``Welcome to the Sphinx <version> quickstart utility.``,
+installation is succeeded. Quit by hitting ``Ctrl+C``.
+
+That it. Install is over. Let's go to :doc:`tutorial` to make Sphinx project.
+
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