12 minFundamentals of Testing
Unofficial ISTQB Foundation Study Guide
An unofficial ISTQB Foundation study guide for CTFL v4.0.1: six study modules, testing techniques, original practice questions, and practical QA examples.
Read the guide →ShiftQA Lessons · Practical QA guides
Software testing, explained through real decisions.
Use these original tutorials to solve real QA problems—from writing better test cases and building Playwright coverage to API, mobile, exploratory, regression, AI-assisted testing, and ISTQB Foundation study.
Browse by topic
QA topic cluster
ISTQB & Foundations
3 practical guides
9 minFundamentals of Testing
What Is Software Testing?
Understand what software testing is, why teams test, what testing can prove, and how a tester turns product risk into useful evidence.
Read the guide →10 minFundamentals of Testing
The Seven Testing Principles Explained
Learn the seven foundational testing principles with practical examples and understand how they change everyday QA decisions.
Read the guide →QA topic cluster
Test Design
3 practical guides
11 minTest Analysis and Design
Equivalence Partitioning with Examples
Learn how to divide an input or output domain into useful partitions and select representative software test cases without unnecessary duplication.
Read the guide →10 minTest Analysis and Design
Boundary Value Analysis with Examples
Learn one-value, two-value, and practical boundary testing with worked examples for ranges, counts, dates, sizes, and ordered data.
Read the guide →11 minTest Analysis and Design
Decision Table Testing with Examples
Learn how to model combinations of business conditions and actions, simplify rules, and derive effective decision-table test cases.
Read the guide →QA topic cluster
Practical QA
5 practical guides
8 minTesting Throughout the Software Development Lifecycle
Confirmation Testing vs Regression Testing
Understand how confirmation testing verifies a specific fix while regression testing checks for unintended effects elsewhere.
Read the guide →10 minManaging the Test Activities
How to Write an Effective Defect Report
Write clear, reproducible, evidence-backed defect reports with useful titles, expected and actual results, severity, context, and linked test coverage.
Read the guide →11 minTest Analysis and Design
How to Write Test Cases That Are Actually Useful
Learn how to write clear, reusable software test cases with strong preconditions, steps, expected results, coverage rationale, and examples that survive beyond one test run.
Read the guide →11 minTest Analysis and Design
Exploratory Testing Guide
Learn how to plan and conduct exploratory testing with focused charters, risk hypotheses, observation, evidence, note-taking, and useful debriefs.
Read the guide →12 minTesting Throughout the Software Development Lifecycle
Regression Testing Strategy
Build a regression testing strategy that selects the right coverage after changes using impact analysis, product risk, automation, historical failures, and execution tiers.
Read the guide →QA topic cluster
Automation & Tools
3 practical guides
14 minTest Tools
Playwright Testing Tutorial
A practical Playwright tutorial for building browser tests around user outcomes, stable locators, assertions, fixtures, evidence, and maintainable regression coverage.
Read the guide →10 minTest Tools
Playwright Locators: Best Practices and Examples
Choose reliable Playwright locators with practical guidance for getByRole, labels, text, test IDs, CSS selectors, strictness, and accessibility-aware automation.
Read the guide →12 minTest Tools
Maestro Mobile Testing Guide
Learn the fundamentals of Maestro mobile UI testing: YAML flows, visible-text and accessibility selectors, test IDs, assertions, reusable flows, and stable mobile QA automation.
Read the guide →QA topic cluster
API & Integration Testing
1 practical guide
13 minTest Analysis and Design
API Testing Guide
Learn a practical approach to API testing across contracts, status codes, validation, authentication, data integrity, negative cases, idempotency, and integration behavior.
Read the guide →QA topic cluster
AI-Assisted QA
2 practical guides
14 minTest Tools
How to Use AI in Software Testing
Learn where AI can strengthen test analysis, test design, exploratory preparation, automation, and reporting—and where evidence, security, and human judgment must remain in control.
Read the guide →12 minTest Analysis and Design
How to Review AI-Generated Test Cases
A practical review framework for AI-generated test cases covering scope, expected results, duplication, safety, evidence, automation readiness, and human QA judgment.
Read the guide →From learning to real QA
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Independent study support
ShiftQA Lessons is unofficial preparation. ShiftQA Labs is not an ISTQB accredited training provider and is not affiliated with or endorsed by ISTQB. Use official ISTQB materials as the source of truth for certification requirements.