[ADD] point_of_sale: Getting started with Odoo Point of Sale

https://docs.google.com/document/d/1yZPuKQFv8qrt06RNCTIYYf3HqIL3frMGRCEGPUR4M3o/edit#

point_of_sale/overview/start.rst

@@ -1,3 +1,158 @@
 =======================================
 Getting started with Odoo Point of Sale
-=======================================
+=======================================
+
+Overview
+========
+
+Odoo's online **Point of Sale** application is based on a simple, user
+friendly interface. The **Point of Sale** application can be used online or
+offline on iPads, Android tablets or laptops.
+
+Odoo **Point of Sale** is fully integrated with the **Inventory** and the
+**Accounting** applications. Any transaction with your point of sale will
+automatically be registered in your inventory management and accounting
+and, even in your **CRM** as the customer can be identified from the app.
+
+You will be able to run real time statistics and consolidations across
+all your shops without the hassle of integrating several external
+applications.
+
+Configuration
+=============
+
+Install the Point of Sale Application
+-------------------------------------
+
+Start by installing the **Point of Sale** application. Go to 
+:menuselection:`Apps` and install the **Point of Sale** application.
+
+.. image:: media/start01.png
+    :align: center
+
+Do not forget to install an accounting **chart of account**. If it is not
+done, go to the **Invoicing/Accounting** application and click on **Browse
+available countries**:
+
+.. image:: media/start02.png
+    :align: center
+
+Then choose the one you want to install.
+
+When it is done, you are all set to use the point of sale.
+
+Adding Products
+---------------
+
+To add products from the point of sale **Dashboard** go to 
+:menuselection:`Orders --> Products` and click on **Create**.
+
+The first example will be oranges with a price of ``3€/kg``. In the **Sales**
+tab, you can see the point of sale configuration. There, you can set a
+product category, specify that the product has to be weighted or not and
+ensure that it will be available in the point of sale.
+
+.. image:: media/start03.png
+    :align: center
+
+In same the way, you can add lemons, pumpkins, red onions, bananas... in
+the database.
+
+.. tip::
+    How to easily manage categories?
+
+    If you already have a database with your products, you can easily set a
+    **Point of Sale Category** by using the Kanban view and by grouping the
+    products by **Point of Sale Category**.
+
+.. image:: media/start04.png
+    :align: center
+
+Configuring a payment method
+----------------------------
+
+To configure a new payment method go to 
+:menuselection:`Configuration --> Payment methods`
+and click on **Create**.
+
+.. image:: media/start05.png
+    :align: center
+
+After you set up a name and the type of payment method, you can go to
+the point of sale tab and ensure that this payment method has been
+activated for the point of sale.
+
+Configuring your points of sales
+--------------------------------
+
+Go to :menuselection:`Configuration --> Point of Sale`, 
+click on the ``main`` point of sale. Edit the point of sale 
+and add your custom payment method into the available payment methods. 
+
+.. image:: media/start06.png
+    :align: center
+
+You can configure each point of sale according to your hardware,
+location,...
+
+.. demo:fields:: point_of_sale.action_pos_config_pos
+
+Now you are ready to make your first steps with your point of sale.
+
+First Steps in the Point of Sale
+================================
+
+Your first order
+----------------
+
+On the dashboard, you can see your points of sales, click on **New
+session**:
+
+.. image:: media/start07.png
+    :align: center
+
+You will get the main point of sale interface:
+
+.. image:: media/start08.png
+    :align: center
+
+On the right you can see the products list with the categories
+on the top. If you click on a product, it will be added in the cart. You
+can directly set the correct quantity or weight by typing it on the
+keyboard.
+
+Payment
+-------
+
+Once the order is completed, click on **Payment**. You can choose the
+customer payment method. In this example, the customer owes you ``10.84 €``
+and pays with a ``20 €`` note. When it's done, click on **Validate**.
+
+.. image:: media/start09.png
+    :align: center
+
+Your ticket is printed and you are now ready to make your second order.
+
+Closing a session
+-----------------
+
+At the end of the day, to close the session, click on the **Close** button
+on the top right. Click again on the close button of the point of sale.
+On this page, you will see a summary of the transactions
+
+.. image:: media/start10.png
+    :align: center
+
+If you click on a payment method line, the journal of this method
+appears containing all the transactions performed.
+
+.. image:: media/start11.png
+    :align: center
+
+Now, you only have to validate and close the session.
+
+.. seealso::
+    * :doc:`../shop/cash_control`
+    * :doc:`../shop/invoice`
+    * :doc:`../shop/refund`
+    * :doc:`../shop/seasonal_discount`