diff --git a/README.md b/README.md
index 1999cf9..a9a47fb 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,82 @@
 
 e-mail send library
 
+## install
+
+`composer require shadoll/sletter`
+
+## usage
+
+```
+require __DIR__.'/../vendor/autoload.php';
+
+$letter = (new shadoll\sLetter);
+```
+
+set mail variables:
+
+```
+$letter->set([
+    'sender' => 'mailgun', // sender - support mail or mailgun-service
+    'logoUri' => "https://site.com/logo.png", // link to logo that showing in letter
+    'fromMail' => "site@site.com", // sender email
+    'fromName' => "SiteLetter", // sender name
+    'toMail' => "info@site.com", // resipient email
+    'senderIP' => $_SERVER['REMOTE_ADDR'],
+    'mailgun_apikey' => 'key',
+    'mailgun_domain' => 'mg.site.com',
+]);
+```
+
+adding fields titles:
+
+```
+$letter->setLang([
+    'order' => 'Замовлення',
+    'message' => 'Повідомлення',
+    'comment' => 'Повідомлення',
+    'date' => 'Дата',
+    'time' => 'Час',
+    'type' => 'Тип',
+    'doors' => 'Кількість дверцят',
+    'width' => 'Ширина',
+    'depth' => 'Глибина',
+]);
+```
+
+set fields from form:
+
+```
+$letter->setData([
+    'name' => !empty($_REQUEST['name'])?($_REQUEST['name']):'',
+    'phone' => !empty($_REQUEST['phone'])?($_REQUEST['phone']):'',
+    'email' => !empty($_REQUEST['email'])?($_REQUEST['email']):'',
+    'message' => !empty($_REQUEST['message'])?($_REQUEST['message']):'',
+]);
+```
+
+fields list to validate before send (not working now):
+
+```
+$letter
+    ->validate([
+        'name',
+        'phone',
+        'email',
+    ])
+```
+
+sending email
+
+```
+$letter
+    ->detect()
+    ->send()
+    ->state();
+```
+
+detect - get sender info from his IP
+
+send - if no error send email
+
+state - action result (not fully working now)
diff --git a/lib/sLetter.php b/lib/sLetter.php
index 7855055..3cb45b1 100644
--- a/lib/sLetter.php
+++ b/lib/sLetter.php
@@ -2,8 +2,8 @@
 /**
  *
  * @author sHa <sha@shadoll.com>
- * @package shadoll/sLetter
- * @version 18.2.12
+ * @package sLetter
+ * @version 18.2.13
  *
  */