diff --git a/README.md b/README.md
index cc50a1d..7d3a929 100644
--- a/README.md
+++ b/README.md
@@ -15,47 +15,66 @@ Include jupitern/table in your project, by adding it to your composer.json file.
 ## Usage
 ```php
 
-// make connection
-$docdb = new AzureCosmosDb($uri, $key);
-$conn = $docdb->selectDB($db);
+$conn = app()->resolve('DocDB');
+
+$rid = \Jupitern\CosmosDb\QueryBuilder::instance()
+    ->setConnection($conn)
+    ->collection("Users")
+    ->save(['id' => '1', 'name' => 'John Doe', 'age' => 22]);
+
+echo "record inserted: $rid";
+
+$rid = \Jupitern\CosmosDb\QueryBuilder::instance()
+    ->setConnection($conn)
+    ->collection("Users")
+    ->save(['id' => '2', 'name' => 'Jane doe', 'age' => 35]);
+
+echo "record inserted: $rid";
+
+$res = \Jupitern\CosmosDb\QueryBuilder::instance()
+    ->setConnection($conn)
+    ->collection("Users")
+    ->save(["_rid" => $rid, 'id' => '2', 'name' => 'Jane Doe Something', 'age' => 36]);
+
+echo "record updated: $rid";
 
 // get one row as array
 $res = \Jupitern\CosmosDb\QueryBuilder::instance()
-  ->setConnection($conn)
-  ->collection("Users")
-  ->select("Users.id, Users.username")
-  ->where("Users.id = '4uc234ocu23h4o'")
-  ->find()
-  ->toArray();
+    ->setConnection($conn)
+    ->collection("Users")
+    ->select("Users.id, Users.name")
+    ->where("Users.age > 30")
+    ->find()
+    ->toArray();
 
 var_dump($res);
 
 // get 5 rows as array
 $res = \Jupitern\CosmosDb\QueryBuilder::instance()
-  ->setConnection($conn)
-  ->collection("Users")
-  ->select("Users.id, Users.username")
-  ->where("Users.age > 18")
-  ->limit(5)
-  ->findAll()
-  ->toArray();
+    ->setConnection($conn)
+    ->collection("Users")
+    ->select("Users.id, Users.username")
+    ->where("Users.age > 20")
+    ->limit(5)
+    ->findAll()
+    ->toArray();
 
 var_dump($res);
 
 // delete one document
 $res = \Jupitern\CosmosDb\QueryBuilder::instance()
-  ->setConnection($conn)
-  ->collection("Users")
-  ->where("Users.age > 18")
-  ->delete();
+    ->setConnection($conn)
+    ->collection("Users")
+    ->where("Users.age > 30")
+    ->delete();
 
 var_dump($res);
 
 // delete all documents
 $res = \Jupitern\CosmosDb\QueryBuilder::instance()
-  ->setConnection($conn)
-  ->collection("Users")
-  ->where("Users.age > 18")
-  ->deleteAll();
+    ->setConnection($conn)
+    ->collection("Users")
+    ->where("Users.age > 20")
+    ->deleteAll();
 
 var_dump($res);