Testing & QA · 6 free lessons

Postman Tutorial for Beginners

API testing with Postman — collections, environments, test scripts, request chaining, schema validation and Newman in CI.

📝 6 lessons ⏱️ ~23m reading 🎓 Beginner → Advanced 💻 Code examples
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Postman course syllabus

Follow the lessons in order — each one builds on the last. Tick them off as you go.

  1. Postman Introduction Sending your first API requests, organising collections, and using environments for dev, staging and production. 3 min
  2. Writing Tests & Scripts pm.test and pm.expect assertions on status codes, headers, bodies and response times, plus pre-request scripts. 4 min
  3. Variables & Request Chaining Variable scopes, saving a login token for later requests, and chaining create → read → update → delete flows. 4 min
  4. Schema & Contract Testing Validating responses against a JSON Schema in Postman so a changed API contract fails a test immediately. 4 min
  5. Data-Driven Runs & Newman The Collection Runner with CSV data files, and running collections from the command line and CI with Newman. 4 min
  6. Postman & API Testing Interview Questions Postman and API testing interview questions — status codes, scripts, variables, Newman — with answers. 4 min

Postman FAQ

Is this Postman tutorial free?
Yes. All 6 Postman lessons are free to read online with no sign-up. Each one includes working code examples you can copy and run.
Is Postman good for beginners?
Yes. The tutorial starts with "Postman Introduction" and builds up one concept at a time, so you don't need any prior Postman experience — just follow the lessons in order.
How long does it take to learn Postman?
Reading all 6 lessons takes about 1 hour. Most learners need a few weeks of hands-on practice alongside the lessons to feel confident using Postman on real projects.
What should I learn after Postman?
Good next topics are AI in Software Testing, Cypress, Manual Testing, Playwright. The QA Engineer Roadmap shows the full order.