diff --git a/CHANGELOG.md b/CHANGELOG.md
index ccab0b0..0bef2bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,6 @@
 
 All notable changes to `ips-api` will be documented in this file
 
-## 1.0.0 - 201X-XX-XX
+## 1.0.0 - 2022-03-26
 
 - initial release
diff --git a/README.md b/README.md
index 2086d0f..06490dc 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,9 @@
-# Very short description of the package
+# IPS REST API Laravel Client
 
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/ova-studio/ips-api.svg?style=flat-square)](https://packagist.org/packages/ova-studio/ips-api)
 [![Total Downloads](https://img.shields.io/packagist/dt/ova-studio/ips-api.svg?style=flat-square)](https://packagist.org/packages/ova-studio/ips-api)
-![GitHub Actions](https://github.com/ova-studio/ips-api/actions/workflows/main.yml/badge.svg)
 
-This is where your description should go. Try and limit it to a paragraph or two, and maybe throw in a mention of what PSRs you support to avoid any confusion with users and contributors.
+# [IPS REST API Documentation](https://invisioncommunity.com/developers/rest-api)
 
 ## Installation
 
@@ -14,10 +13,69 @@ You can install the package via composer:
 composer require ova-studio/ips-api
 ```
 
-## Usage
+## Configuration
 
+In `config/services.php`:
+
+```php
+'ips' => [
+    // ... other options
+    'base_uri' => env('IPS_BASE_URI'),
+    'api_key' => env('IPS_API_KEY'),
+    'default_user' => env('IPS_DEFAULT_USER_ID')
+]
+```
+
+## Implemented API Methods
+
+### Sending private message
+
+[Method documentation](https://invisioncommunity.com/developers/rest-api?endpoint=core/messages/POSTindex)
+
+Basic usage:
+```php
+$api = new IpsApi();
+$to_user_id = 1;
+
+$api->system()->messages()->create($to_user_id, 'Message title', 'Message body');
+```
+
+By default, message is sent from default user from config file.
+If you want to send message from another user, you can set user id with
+`withSender` method.
 ```php
-// Usage description here
+$api = new IpsApi();
+$from_user_id = 1;
+$to_user_id = 1;
+
+$api->system()->messages()->withSender($from_user_id)->create($to_user_id, 'Message title', 'Message body');
+```
+
+### Sending message to topic
+
+[Method documentation](https://invisioncommunity.com/developers/rest-api?endpoint=forums/posts/POSTindex)
+
+Basic usage:
+```php
+$api = new IpsApi();
+$topic_id = 1;
+
+$api->forums()->posts()->create($topic_id, '<p>Message HTML body</p>');
+```
+
+By default, message is sent from default user from config file.
+If you want to send message from another user, you can set user id with
+`withAuthor(int $author, ?string $author_name = null)` method.
+
+If author ID is equal 0, author name is required.
+```php
+$api = new IpsApi();
+$from_user_id = 1;
+$topic_id = 1;
+
+$api->forums()->posts()
+        ->withAuthor($from_user_id) // or ->withAuthor(0, 'Somename')
+        ->create($to_user_id, 'Message title', 'Message body');
 ```
 
 ### Testing