diff --git a/readme.md b/readme.md
index 6551a32..aa03ef4 100644
--- a/readme.md
+++ b/readme.md
@@ -13,4 +13,24 @@ and copy default configuration by invoking `$ php artisan vendor:publish` comman
 
 ## Usage
 
-To be continued...
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+You can use the service pretty straightforward and inject dependency in your controller:
+ 
+```php
+<?php
+
+namespace App\Http\Controllers;
+
+class SmsController extends Controller
+{
+    public function send(SmppServiceInterface $smpp)
+    {
+        // One number
+        $this->smpp->sendOne(1234567890, 'Hi, this SMS was send via SMPP protocol');
+        
+        // Multiple numbers
+        $this->smpp->sendBulk([1234567890, 0987654321], 'Hi!');
+    }
+}
+```
+
+However it is better to abstract your SMS sending service from the SMPP implementation by defining a SMPP-compatible service interface.
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