Research On Postman
Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.
Postman allows you to write, run and automate your tests in one place. You can automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production; or you can explore the API by sending it different kinds of data to see what values are returned.
Postman Beginner's Course - API Testing: This course will introduce you to Postman and is suited for beginners. Video shows how to build API requests with Postman, how to inspect responses and create workflows, how to write API tests and how to automate their execution.
Postman Docs: This is the place to find official information on how to use Postman in your API projects.