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Learn IT, one step at a time

LearningQuiz is a home for IT learning materials: free practice quizzes, interactive study guides and career tools for people starting out in technology and for those moving up in it.

Sign in to track your learning: every quiz and tutorial shows whether you have not started it, are part-way through, or have completed it, and a tutorial remembers where you stopped so you can pick up again.

What is information technology?

Information technology, or IT, is the use of computers, software and networks to capture, store, protect, process and share information. Banks, hospitals, shops, schools and games all run on it, which is why IT skills lead to work in so many different fields.

Four building blocks sit under almost everything in IT:

Hardware

The physical side: computers, servers, phones, storage devices and network equipment.

Software

The programs that run on hardware: operating systems, everyday tools and business applications.

Networks

The links that let devices talk to each other: cables, Wi-Fi, routers and switches, up to the internet itself.

Data

How information is organised, stored and kept safe, with databases and storage systems.

Careers in IT: find a role

IT work is not one job. Choose what you enjoy, or type a word such as data, support or Java, to see roles that fit, what they do, what job ads usually ask for, and where to start here.

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27 roles

Software engineer

Designs and builds features, fixes defects and reviews other people's code. Usually owns a part of a product from idea to release.

Often asked for: A main language (Java, Python, JavaScript, C#), data structures, Git, testing, APIs.

Start with Java and Spring Boot →

Back-end developer

Builds the server side: business rules, databases and the APIs that apps and websites call.

Often asked for: Java, Python or similar, SQL, REST, caching, authentication, cloud basics.

Start with Java and Spring Boot →

Front-end developer

Builds what users see and click in the browser, and makes it fast, accessible and consistent.

Often asked for: HTML, CSS, JavaScript or TypeScript, a UI framework, accessibility, browser tools.

Browse quizzes →

Full-stack developer

Works on both the screen and the server, which suits small teams and products that are still taking shape.

Often asked for: Front-end and back-end skills above, databases, deployment basics.

Start with Java and Spring Boot →

Mobile developer

Builds apps for phones and tablets, and deals with small screens, offline use and app-store rules.

Often asked for: Kotlin or Swift, or a cross-platform framework, app lifecycle, APIs.

Browse quizzes →

QA and test engineer

Plans and automates tests so defects are found before customers find them.

Often asked for: Test design, automation tools, API testing, CI pipelines, clear bug reports.

Browse quizzes →

Show all 27 roles

Reference guides

What each certification covers and who it is for, the data careers guide, and networking vendor guides, all in one place.

Open the reference guides →

Practise for your goal

Practice quizzes with answer explanations. Start with the free ones.

All quizzes →

AWS certifications

Practitioner, Developer, Solutions Architect and AI exams.

Start practising →

Data careers

Data engineering, analytics and data science, with Python.

Start practising →

Azure and Google Cloud

Study guides and quizzes for the other two big clouds.

Start practising →

Project management

Own course notes and quizzes for project work.

Start practising →

Get ready for the job, not only the exam

Tools to take you from quiz to interview.

Resume ATS

Upload your resume, see how an ATS reads it and which keywords are missing.

Certification Info

What each certification covers, who it is for, and what to learn first.

Helping guide only. Independent learning aid, not affiliated with or endorsed by any certification body or vendor.

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