Learn it. Practise it. Build it. Prove it.

Do not just use AI. Build it.

Neural networks, language models, Bayesian reasoning and robotics, taught with real code and free for everyone.

No black boxes. You implement a neuron, an attention head, a spam filter and a PID controller yourself, then prove it at mastery level.

Explore skills tracks Start neural networks
Always free, no adverts
No account needed
Real Python, not slideware
A learner holding a notebook and smiling
Why WAJD Skills exists

This is normally a paid degree module

Convolution, attention, priors, control loops. Taught properly, with working code, at no cost and with nothing to sell you.

Mechanisms, not metaphors

Most free AI content stops at analogies. Here you compute an attention weight, apply a convolution kernel and tune a PID gain yourself, in Python you can run today.

Evidence based teaching

Every unit uses retrieval practice and mastery checks, the two methods research consistently ranks highest. You recall and apply, you do not just watch.

Proof you understood it

Every mastery check demands 90 per cent, so the certificate means you can actually do it, not that you watched a video to the end.

Skills tracks

Eight tracks, all free

Start with the AI and robotics core, or build the foundations first. Every track ends with a certificate.

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How it works

The WAJD learn loop

The same four steps in every unit, because this is the sequence that makes learning stick.

1

Learn it

A short, plain English explanation with real worked examples. No filler and no jargon.

2

Practise it

Retrieval questions with instant feedback that tells you why, so mistakes teach you something.

3

Build it

A small real task you actually do, with a checklist. This is where a skill becomes yours.

4

Prove it

A mastery check at 90 per cent. Pass every unit and the track certificate is issued.

Learners working together at laptops
What it costs

Free, and free properly

Not a trial, not a teaser, and not free until the useful part. Here is exactly what you get.

Everyone

WAJD Skills

Free always

Everything on this site, for every learner, with no account required.

  • Every skills track and every unit
  • All practice and mastery questions
  • Build tasks with checklists
  • Free certificate with a shareable link
  • No adverts and no data selling
Start learning now

Want more from WAJD?

Academy free too

WAJD Academy covers the exam side: 11 Plus, GCSE and A Level, also free.

  • Visual Lab interactive science
  • Active recall and spaced practice
  • Past papers for every UK board
  • Progress tracking for parents
Visit WAJD Academy
Why it matters

The gap we are closing

Everyone explains what AI does. Almost nobody free will show you the mechanism.

Every explainer told me attention lets the model focus. Actually writing the softmax and watching the weights land on one key is when it finally clicked.

Sixth form learnerInside a large language model

The 99 per cent accurate test being wrong nine times out of ten genuinely changed how I read every statistic since. I had to work it out myself to believe it.

Adult learnerBayesian thinking

I tuned a PID controller until it stopped oscillating and finally understood why our robotics club project kept shaking itself apart.

Robotics club memberPhysical AI and robotics

Start with neural networks

Build a neuron, train it with gradient descent, then make a network see with convolution. Four units, real code, completely free.

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