Learn how machine learning really works by building it, with no programming or advanced maths needed: data and charts, predicting numbers, sorting things into groups, neural networks that read handwriting, spam filters, word meanings, clustering and recommendations, and how chatbots work. Every lesson trains real models in your browser on an AI workbench, with checked exercises and nothing to install, and a final project teaches a robot to answer visitors' questions. 10 modules, 36 lessons. Lessons 1.1 and 1.2 are free to try. Includes using AI fairly, honestly and safely.

Learn to work confidently at the Linux command line, the way servers, cloud computers and developers' machines are run: finding your way around folders, copying, moving and deleting safely, reading and searching files, pipes and redirection, users and permissions, sudo, running programs and background jobs, disk space, the nano editor and your first shell scripts. Every lesson has a live practice terminal on a safe pretend computer in your browser, with checked exercises and nothing to install, and a final project tidies a publisher's archive with a backup script. 10 modules, 36 lessons. Lessons 1.1 and 1.2 are free to try.

Learn to make sense of numbers with no advanced maths: averages and spread, honest charts, probability, the bell curve, samples and surveys, margins of error, confidence intervals, significance tests and p-values, correlation and regression, and how to spot misleading claims in the news and in AI answers. Every lesson has a statistics workbench in your browser that does the calculations and draws the charts, with checked exercises and nothing to install, and a final project carries out a full investigation for a farm co-operative. 10 modules, 36 lessons. Lessons 1.1 and 1.2 are free to try.

Teach a humanoid robot to see. Write short JavaScript programs that work on the pictures from the robot's cameras: pictures as numbers, colour, thresholds and filters, edges, blobs and shapes, finding and counting objects, camera geometry, depth from two eyes and from a depth camera, motion and tracking, recognising objects, and staying safe around people. Every lesson has a vision workbench in your browser with checked exercises and nothing to install, the programming you need is taught from the start, and in the final project the robot finds and fetches a cup. 10 modules, 36 lessons. Lessons 1.1 and 1.2 are free to try.

Stay safe online, whatever your age: make passwords that cannot be guessed and use two-step sign-in, spot scam emails, text messages, phone calls and fake websites, keep your phone and computer safe, use Wi-Fi and online payments safely, protect your privacy and your files, keep a small business safe, and know exactly what to do if something goes wrong. Practise on pretend messages, screens and tools in your browser, with checked exercises in every lesson and nothing to install; no technical knowledge needed. 10 modules, 36 lessons. Lessons 1.1 and 1.2 are free to try.

Learn how organisations defend themselves, as a first step towards a career in IT or security: risks and controls, how attacks happen, accounts and access, networks and firewalls, searching security records, protecting computers and data, website and cloud security, handling an incident, and policies. Practise on a week of realistic security records from a small company and finish with a full investigation. 36 lessons, no installation needed.

The next step after learning Python: the data structures and algorithms asked about in software jobs, campus placement tests and technical interviews. Searching, sorting, hash maps, stacks and queues, recursion, linked lists, trees, heaps, graphs and dynamic programming, with live Python in your browser and a step counter that shows how fast your code really is. Exercises are checked on many inputs, and there is a final project. 36 lessons, no installation needed.

How computer networks really work, for anyone heading towards IT support or network jobs. Help a design studio run and move its office network in a practice network that runs in your browser: cables and switches, IP addresses and subnetting, routers and routing tables, ports, TCP and UDP, DHCP, DNS and address sharing, wireless coverage, IPv6, and a proper method for finding faults, ending with a full office network of your own design. Checked exercises and a quiz in every lesson; no programming and nothing to install. Lessons 1.1 and 1.2 are free.

What the cloud really is and how to use it well, for anyone heading towards IT support, cloud or operations jobs. Move a small online shop from one overworked office server into a practice cloud that runs in your browser: virtual servers, private networks and security rules, storage and backups, load balancers and automatic scaling, managed databases, serverless functions and containers, users and permissions, keeping the bill under control, monitoring and fault-finding, ending with the whole move as a final project. Checked exercises and a quiz in every lesson; no programming and nothing to install. Lessons 1.1 and 1.2 are free.