diff --git a/.rubocop.yml b/.rubocop.yml
index b5a5de3..eb7f1ff 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -15,7 +15,7 @@ inherit_gem:
     - config/ruby-3.0.yml
 
 AllCops:
-  TargetRubyVersion: 3.2
+  TargetRubyVersion: 3.0
   NewCops: enable
   Exclude:
     - '**/vendor/**/*'
diff --git a/README.yml b/README.yml
deleted file mode 100644
index 1f82b6f..0000000
--- a/README.yml
+++ /dev/null
@@ -1,2 +0,0 @@
-title: Home
-icon: home
\ No newline at end of file
diff --git a/index.md b/index.md
new file mode 100644
index 0000000..e8e8675
--- /dev/null
+++ b/index.md
@@ -0,0 +1,66 @@
+# Caoutsearch [\ˈkawt͡ˈsɝtʃ\\](http://ipa-reader.xyz/?text=ˈkawt͡ˈsɝtʃ)
+
+<span>[![Gem Version](https://badge.fury.io/rb/caoutsearch.svg)](https://rubygems.org/gems/caoutsearch)</span> <span>
+[![CI Status](https://github.com/solutions-territoire/caoutsearch/actions/workflows/ci.yml/badge.svg)](https://github.com/solutions-territoire/caoutsearch/actions/workflows/ci.yml)</span> <span>
+[![Ruby Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://github.com/testdouble/standard)</span> <span>
+[![Maintainability](https://api.codeclimate.com/v1/badges/fbe73db3fd8be9a10e12/maintainability)](https://codeclimate.com/github/solutions-territoire/caoutsearch/maintainability)</span> <span>
+[![Test Coverage](https://api.codeclimate.com/v1/badges/fbe73db3fd8be9a10e12/test_coverage)](https://codeclimate.com/github/solutions-territoire/caoutsearch/test_coverage)</span>
+
+<span>[![JRuby](https://github.com/solutions-territoire/caoutsearch/actions/workflows/jruby.yml/badge.svg)](https://github.com/solutions-territoire/caoutsearch/actions/workflows/jruby.yml)</span> <span>
+[![Truffle Ruby](https://github.com/solutions-territoire/caoutsearch/actions/workflows/truffle_ruby.yml/badge.svg)](https://github.com/solutions-territoire/caoutsearch/actions/workflows/truffle_ruby.yml)</span>
+
+**!! Gem under development before public release !!**
+
+Caoutsearch is a new Elasticsearch integration for Ruby and/or Rails.  
+It provides a simple but powerful DSL to perform complex indexing and searching, while securely exposing search criteria to a public and chainable API, without overwhelming your models.
+
+Caoutsearch only supports Elasticsearch 8.x right now.  
+It is used in production in a robust application, updated and maintained for several years at [Solutions & Territoire](https://solutions-territoire.fr).
+
+Caoutsearch was inspired by awesome gems such as [elasticsearch-rails](https://github.com/elastic/elasticsearch-rails) or [search_flip](https://github.com/mrkamel/search_flip).  
+Depending on your search scenarios, they may better suite your needs.
+
+## Overview
+
+Caoutsearch let you create `Index` and `Search` classes to manipulate your data :
+
+```ruby
+class ArticleIndex < Caoutsearch::Index::Base
+  property :title
+  property :published_on
+  property :tags
+
+  def tags
+    records.tags.public.map(&:to_s)
+  end
+end
+```
+
+```ruby
+class ArticleSearch < Caoutsearch::Search::Base
+  filter :title, as: :match
+  filter :published_on, as: :date
+  filter :tags
+
+  has_aggregation :popular_tags, {
+    filter: { term: { published: true } },
+    aggs: {
+      published: {
+        terms: { field: :tags, size: 10 }
+      }
+    }
+  }
+end
+```
+
+You can then index your records
+
+```ruby
+ArticleIndex.reindex
+```
+
+Or search through them:
+
+```ruby
+ArticleSearch.search(published_on: [["now-1y", nil]]).aggregate(:popular_tags)
+```
diff --git a/index.yml b/index.yml
new file mode 100644
index 0000000..46b4056
--- /dev/null
+++ b/index.yml
@@ -0,0 +1,2 @@
+title: Overview
+icon: home
\ No newline at end of file
diff --git a/retype.yml b/retype.yml
index 68e0106..5918880 100644
--- a/retype.yml
+++ b/retype.yml
@@ -28,4 +28,12 @@ links:
   #   target: blank
 
 footer:
-  copyright: "© 2023 [Solutions & Territoire](https://solutions-territoire.fr) - [MIT License](https://github.com/solutions-territoire/caoutsearch/blob/main/LICENSE)"
\ No newline at end of file
+  copyright: "© 2023 [Solutions & Territoire](https://solutions-territoire.fr) - [MIT License](https://github.com/solutions-territoire/caoutsearch/blob/main/LICENSE)"
+
+edit:
+  base: docs
+
+exclude:
+  - "README.md"
+  - "release_instruction.md"
+  - "retype_instruction.md"
\ No newline at end of file