Update README.md

README.md

@@ -10,4 +10,14 @@ Run the following command in Magento 2 root folder:
 composer require mageplaza/module-gift-wrap-graphql
 php bin/magento setup:upgrade
 php bin/magento setup:static-content:deploy
-```
+```
+
+## How to use
+
+To start working with **Gift Wrap GraphQL** in Magento, you need to:
+
+- Use Magento 2.3.x. Return your site to developer mode
+- Install [chrome extension](https://chrome.google.com/webstore/detail/chromeiql/fkkiamalmpiidkljmicmjfbieiclmeij?hl=en) (currently does not support other browsers)
+- Set **GraphQL endpoint** as `http://<magento2-3-server>/graphql` in url box, click **Set endpoint**. (e.g. http://develop.mageplaza.com/graphql/ce232/graphql)
+- Perform a query in the left cell then click the **Run** button or **Ctrl + Enter** to see the result in the right cell
+- You can see more details [here](https://documenter.getpostman.com/view/5187684/SzKTuyMH?version=latest).