update README

README.md

@@ -1 +1,16 @@
-# MERN_A_to_Z
+# MERN_A_to_Z
+
+### To Run the app (server)
+
+##### Make sure you are in - MERN_A_to_Z/ directory & type the following command
+
+```sh
+$ npm install
+$ npm run app
+```
+
+[Read My Article on LogRocket Blog about this repository](<[https://blog.logrocket.com/mern-stack-a-to-z-part-1/](https://blog.logrocket.com/mern-stack-a-to-z-part-1/)>)
+
+### You will find the front end part (MERN stack A to Z - Part-2) here.
+
+[FrontEnd - (Client)](<[https://github.com/nurislam03/MERN_A_to_Z_Client](https://github.com/nurislam03/MERN_A_to_Z_Client)>)