diff --git a/README.md b/README.md
index 9d1f58f..05cba77 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,24 @@ Installation
     new CCMBenchmark\TingBundle\TingBundle(),
 ```
 
+## Table of contents
+- [Configuration](#configuration)
+    - [Main configuration](#main-configuration)
+    - [About public properties](#about-public-properties)
+    - [Declare metadata with attributes](#declare-metadata-with-attributes)
+- [Using Ting as a User Provider](#using-ting-a-user-provider)
+- [Declare a unique constraint](#declare-a-unique-constraint-in-a-table)
+- [Using Ting as a Value Resolver](#using-ting-as-a-value-resolver)
+
 Configuration
 =============
+
+## Main configuration
 ```
 #!yaml
 
     ting:
-        repositories:
+        repositories: # Unnecessary if entities registered with attributes
             Acme:
                 namespace: Acme\DemoBundle\Entity
                 directory: "@DemoBundle/Entity"
@@ -58,11 +69,278 @@ Configuration
                 timezone: 'Europe/Paris'
 ```
 
-Usage
-===========
-From your controller call
+## About public properties
+Public properties can be used in your entities, however for PHP < 8.4, you should declare a setter to notify the property change.
+
+PHP < 8.4:
+
+```php
+<?php
+
+namespace App\Entity;
+
+use CCMBenchmark\Ting\Entity\NotifyProperty;
+use CCMBenchmark\Ting\Entity\NotifyPropertyInterface;
+
+class City implements NotifyPropertyInterface {
+    use NotifyProperty;
+    
+    public string $name;
+    
+    public function setName(string $name): void
+    {
+        $this->propertyChanged('name', $this->name ?? null, $name);
+        $this->name = $name;
+    }
+
+}
+
 ```
-#!php
 
-    $this->get('ting')->get('\Acme\DemoBundle\Entity\AcmeRepository');
+For PHP >= 8.4, you may use a property hook instead. This hook will be bypassed by Ting for hydratation.
+
+```php
+<?php
+
+namespace App\Entity;
+
+use CCMBenchmark\Ting\Entity\NotifyProperty;
+use CCMBenchmark\Ting\Entity\NotifyPropertyInterface;
+
+class City implements NotifyPropertyInterface {
+    use NotifyProperty;
+    
+    public string $name { 
+        set(string $name) {
+            $this->propertyChanged('name', $this->name ?? null, $name);
+            $this->name = $name;            
+        }
+    };
+}
 ```
+
+### A note about uninitialized typed properties
+- When persisting an entity with uninitialized typed property, the property will be ignored ; a default value must be defined in your database for this column to prevent a failure
+- You cannot access an uninitialized typed property, PHP will trigger an error
+
+## Declare metadata with attributes
+Attributes are provided to declare an entity. Relevant attributes are available in `CCMBenchmark\TingBundle\Schema`.
+
+### Table
+- Full name: `CCMBenchmark\TingBundle\Schema\Table`
+- This attribute must be added to your class, with all relevant options (table, connection, etc.).
+
+### Column
+- Full name: `CCMBenchmark\TingBundle\Schema\Column`
+- This attribute must be added to every property mapped to the database. Serialization is inferred from the type, if available.
+
+### Full example
+
+```php
+// src/Entity/City.php
+<?php
+
+namespace App\Entity;
+
+namespace tests\fixtures;
+
+use App\Repository\CityRepository;
+use Brick\Geo\Point;
+use CCMBenchmark\Ting\Entity\NotifyProperty;
+use CCMBenchmark\Ting\Entity\NotifyPropertyInterface;
+use CCMBenchmark\TingBundle\Schema;
+use Symfony\Component\Uid\Uuid;
+use Symfony\Component\Uid\UuidV4;
+
+#[Schema\Table('city_table', 'connectionName', '%env(DATABASE_NAME)%', CityRepository::class)]
+class City implements NotifyPropertyInterface
+{
+    use NotifyProperty;
+    #[Schema\Column(autoIncrement: true, primary: true)]
+    public int $id {
+        set(int $id) {
+            $this->propertyChanged('id', $this->id ?? null, $id);
+            $this->id = $id;
+        }
+    };
+    
+    #[Schema\Column(column: 'field')]
+    public string $fieldWithSpecifiedColumnName {
+        set (string $fieldWithSpecifiedColumnName) {
+            $this->propertyChanged('fieldWithSpecifiedColumnName', $this->fieldWithSpecifiedColumnName ?? null, $fieldWithSpecifiedColumnName);
+            $this->fieldWithSpecifiedColumnName = $fieldWithSpecifiedColumnName;
+        }
+    };
+}
+```
+```php
+// src/Repository/CityRepository.php
+<?php
+
+namespace App\Repository;
+
+class CityRepository extends CCMBenchmark\Ting\Repository\Repository {
+
+}
+```
+
+## Using Ting as a User Provider
+User providers (re)load users from a storage based on a "user identifier" (extract from [symfony documentation](https://symfony.com/doc/current/security/user_providers.html)).
+
+Ting can be used as a User Provider, it's automatically registered by the bundle as the provider `ting`. To do so, update your security configuration.
+
+```yaml
+security:
+  # https://symfony.com/doc/current/security.html#loading-the-user-the-user-provider
+  providers:
+    app_user_provider:
+      ting:
+        class: App\Entity\User
+        property: email
+```
+
+Your entity will have to implements the following interfaces: `Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface` (for password authenticated users) and `Symfony\Component\Security\Core\User\UserInterface` (common to all kind of users).
+It needs to implement `__serialize` too.
+
+## Declare a Unique constraint in a table
+If you use the component `symfony/validator`, you may need to ensure that a value (or a combination of them) is unique in your table.
+
+You can use the Constraint `CCMBenchmark\TingBundle\Validator\Constraints\UniqueEntity` to do so. In can be used as an annotation, or as an attribute.
+
+Example:
+```php
+namespace App\Entity;
+
+use App\Repository\UserRepository;
+use CCMBenchmark\Ting\Entity\NotifyProperty;
+use CCMBenchmark\Ting\Entity\NotifyPropertyInterface;
+use CCMBenchmark\TingBundle\Schema\Column;
+use CCMBenchmark\TingBundle\Schema\Table;
+use CCMBenchmark\TingBundle\Validator\Constraints\UniqueEntity;
+use Symfony\Component\Security\Core\User\UserInterface;
+use Symfony\Component\Serializer\Attribute\Groups;
+use Symfony\Component\Validator\Constraints as Assert;
+
+#[Table(name: 'users', connection: 'main', database: '%env(DATABASE_DB_NAME)%', repository: UserRepository::class)]
+#[UniqueEntity(options:['repository' => UserRepository::class, 'fields' => ['email']], groups: ['create'])]
+class User implements UserInterface, NotifyPropertyInterface {
+    #[Column(autoIncrement: true, primary: true)]
+    public int $id { set(int $id) {
+        $this->propertyChanged('id', $this->id ?? null, $id);
+        $this->id = $id;
+    }}
+    
+    #[Column]
+    #[Groups(['default', 'create', 'update', 'service_account'])]
+    #[Assert\NotBlank(groups: ["default", "create", "update"])]
+    #[Assert\Email(groups: ["default", "create", "update"])]
+    public string $email { set(string $email) {
+        $this->propertyChanged('email', $this->email ?? null, $email);
+        $this->email = $email;
+    } }
+    
+    public function getRoles(): array
+    {
+        return ['ROLE_USER'];
+    }
+
+    public function eraseCredentials(): void
+    {
+        
+    }
+
+    public function getUserIdentifier(): string
+    {
+        return $this->email;
+    }
+
+    public function __serialize(): array
+    {
+        return [
+            'id' => $this->id,
+            'email' => $this->email,
+        ];
+    }
+}
+```
+
+With that example you can assert, when creating a new user, that the email address is unique:
+
+```php
+<?php
+namespace App\Controller;
+
+use App\Entity\User;
+use App\Repository\UserRepository;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+#[Route('/users', methods:['POST'], format: 'json')]
+class createUserController extends AbstractController {
+    public function __construct (private readonly ValidatorInterface $validator, private readonly UserRepository $userRepository) { }
+    public function __invoke(
+        #[MapRequestPayload(serializationContext: ['groups' => ['create']])] User $user
+    ) :JsonResponse {
+        $violations = $this->validator->validate($user, groups: ['create']);
+        if ($violations->count() > 0) {
+            return new JsonResponse(['message' => 'Errors...'], 422);
+        }
+        $this->userRepository->save($user);
+        return new JsonResponse(['message' => 'User registered'], 201);
+    }
+}
+
+```
+
+## Using Ting as a Value Resolver
+This bundle automatically registers a [Value Resolver](https://symfony.com/doc/current/controller/value_resolver.html#built-in-value-resolvers).
+
+You can automatically map request parameters to entities:
+1. Declare a parameter in your route (i.e: `/api/users/{userId}`), using the property in your entity you'll use to fetch data (in this case: `userId`)
+2. Map it to your action parameters:
+   1. Add it to your signature: `public function getUser(User $user)`
+   2. Update the route to do the mapping: `/api/users/{userId:user}` (in this case: the `User` having `userId` matching the request will be fetched and injected to your action with the argument `$user`)
+
+```php
+<?php
+
+namespace App\Controller;
+
+use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Security\Http\Attribute\IsGranted;
+
+class UserController {
+    #[Route('/api/users/{userId:myUser}', name: 'get_user', methods: ['GET'], format: 'json' )]
+    #[IsGranted('ROLE_USER')]
+    public function getUser(User $user): JsonResponse
+    {
+        return new JsonResponse($this->serializer->serialize($user, 'json', ['groups' => 'default']), json: true);
+    }
+}
+```
+
+For more advanced use cases, you can leverage:
+- [The Expression Language component](https://symfony.com/doc/current/components/expression_language.html)
+- The `CCMBenchmark\TingBundle\Attribute\MapEntity` attribute
+
+Example:
+
+```php
+<?php
+
+namespace App\Controller;
+
+use CCMBenchmark\TingBundle\Attribute\MapEntity;
+use Symfony\Component\Security\Http\Attribute\IsGranted;
+
+class UserController {
+    #[Route('/api/users/{firstname}/{lastname}', name: 'get_user', methods: ['GET'], format: 'json' )]
+    #[IsGranted('ROLE_USER')]
+    public function getUser(#[MapEntity(expr: 'repository.getOneBy({"firstname": firstname, "lastname": lastname}')] User $user): JsonResponse
+    {
+        return new JsonResponse($this->serializer->serialize($user, 'json', ['groups' => 'default']), json: true);
+    }
+}
+```
\ No newline at end of file