diff --git a/README.md b/README.md
index f65d793..9a451a2 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ The files organisation is quite simple:
 
 * in the root directory of your project you need a settings.yaml file that will contains the title and subtitle of your gallery
 * for each gallery you'll need a folder that also contains a settings.yaml file that will describe how to display the content on your gallery
+* and you put the pictures of the gallery inside the gallery folder
 
 ### Root settings.yaml
 
@@ -50,7 +51,7 @@ This settings.yaml will describe:
 * the title, subtitle and cover picture of your gallery that will be used on the homepage
 * if your gallery is public
 * the date of your gallery: this will be used on the homepage since **galleries are sorted anti chronologically** on it
-* the list of sections that will contains your gallery. A section will represent either one picture, a group of pictures or text.
+* the list of sections that will contains your gallery. A section will represent either one picture, a group of pictures or text. The different kind of sections will be explained in the next README section.
 
 Here is an example:
 
@@ -93,6 +94,102 @@ sections:
     - ...
 ```
 
+### Different kind of sections
+
+A gallery is compose of a succession of sections as you can on this [wonderfully
+totally uninteresting example
+gallery](http://psycojoker.github.io/prosopopee/first_gallery/) the gallery is
+composed of 5 sections:
+
+* a full screen picture with text written on it
+* a picture with with borders around it
+* a group of 5 pictures
+* and a fullscreen picture without text on it this time
+
+In your settings.yaml, a section will **always** have a <code>type</code> key
+that will describe its kind and additional data. Underneath, the
+<code>type</code> key is actually the name of an HTML template and the other
+data will be passed to this template.
+
+You can find all the sections templates here: https://github.com/Psycojoker/prosopopee/tree/master/prosopopee/templates/sections
+
+You often have an <code>image</code> key. You need to give it a path to the
+actual file. By convention, those files are put inside your gallery folder but
+this is not mandatory.
+
+#### Full Screen picture with OR without text on it
+
+This display a full screen picture as shown in the [example
+gallery](http://psycojoker.github.io/prosopopee/first_gallery/) in the first
+and last sections. How you should use it:
+
+With text:
+
+```yaml
+  - type: full-picture
+    image: big_picture.jpg
+    text:
+      title: Big picture title
+      sub_title: Some text
+      date: 2016-01-15
+```
+
+Without text:
+
+```yaml
+  - type: full-picture
+    image: big_picture.jpg
+```
+
+#### Bordered picture
+
+This display a centered picture that is surrounded by white (the background) as
+shown in the second position of the [example
+gallery](http://psycojoker.github.io/prosopopee/first_gallery/).
+
+How to use it:
+
+```yaml
+  - type: bordered-picture
+    image: another_picture.jpg
+```
+
+#### Group of pictures
+
+This display a group of zoomable pictures on one or multiple lines as shown on
+the forth position (after the text) of the [example
+gallery](http://psycojoker.github.io/prosopopee/first_gallery/).
+
+```yaml
+  - type: pictures-group
+    images:
+      -
+        - image1.jpg
+        - image2.jpg
+        - image3.jpg
+      -
+        - image4.jpg
+        - image5.jpg
+```
+
+Every sublist (the first level <code>-</code> represent a line).
+
+**Know bug**: the images are left aligned, so if you don't put enough images on
+a line, you'll have white space on the right.
+
+#### Text
+
+This display some centered text as shown on the third position of the [example
+gallery](http://psycojoker.github.io/prosopopee/first_gallery/). HTML is
+allowed inside the text.
+
+How to use it:
+
+```yaml
+  - type: text
+    text: Some text, HTML <b>is allowed</b>.
+```
+
 ## Build the website
 
 **Note: You need to be in an activated virtualenv.**