step 1 : npm install to install require package
step 2 : add a dot env file to root directory
step 3 : nodemon index.js to start the server
step 4 : go to localhost port 3000 to use the server
for endpoint documentation, you could refer to my postman collection (import this to ur postman) --> https://www.getpostman.com/collections/fc615b4b378301f448ac