What you will learn

Explain how websites, apps, servers, APIs and databases fit together — and trace what really happens when a user clicks Login
Open DevTools on any page and read the Elements, Console and Network tabs to investigate a problem
Think in edge cases automatically: boundaries, empty input, wrong data types, repeated clicks, network failure, concurrency
Write test cases and a risk-prioritised test plan for any feature you are handed
Find bugs deliberately hidden from you, including silent failures no ordinary user would ever notice
Write an eight-part bug report clear enough that a developer can act on it without asking you a single question
Use AI to generate unlimited practice apps, review your own reports and mark your capstone against a professional rubric
Know where to find your first paid testing work, and what to learn next

A complete free course that takes you from knowing nothing about how software works to filing bug reports a developer can act on — in five sittings of about 90 minutes each. No coding, no degree, no paid tools. A laptop, a browser and a stubborn mind.

Software testing is one of the very few tech roles you can genuinely start from zero. Every day here ends with something you made: DevTools notes on day one, ten written test cases on day two, a buggy practice app you built and beat on day three, a professional bug report on day four, and a portfolio document on day five that you can send to a client.

Every day also includes an AI Drill — using ChatGPT, Claude or Gemini as your translator, sparring partner, bug factory, harshest reviewer and finally your examiner. Prompts are written out for you to copy. You will also learn exactly where AI helps a tester and where it will confidently lie to you, which matters more than the prompts.

Lessons

1 Day 1: Wait, How Does This Thing Even Work? 8 min 2 Day 2: Start Thinking Like Someone Who Breaks Things 7 min 3 Day 3: Hands on the Keyboard, Bugs on the Table 6 min 4 Day 4: The Contexts Nobody Checks, Reports Nobody Ignores 6 min 5 Day 5: Test Plan, Capstone, and Getting Paid 11 min