The module this tutorial condenses is graded on one thing: a portfolio that carries a single product idea through the early design stages. Not an exam, a body of work. Here is the honest miniature, doable in an afternoon with paper, a pen and one recruitable human.
Pick a small annoyance from your own life and invent an app that fixes it. Homework tracking, splitting money after a group order, deciding what to cook. Small and real beats big and vague. Write three sentences: who it is for, what problem it solves, why existing apps fail at it.
Interview one real person who has the problem (chapter 2 rules: open questions, no leading). Write a persona: name, age, goal, biggest frustration, one real quote from your interview. Every line must trace to something they actually said. No inventing.
Sketch two different rough designs for the main screen, force yourself to make them genuinely different, then pick one and draw six paper screens covering one complete task from start to success. Marker pens, boxes and honest ugliness (chapter 5 rules).
Wizard of Oz it (chapters 5 and 6): give your interviewee a goal in goal language, play the computer, stay silent, log every hesitation. Afterwards ask two questions: what almost made you give up, and what would you change first?
One page: the idea, who it is for, what the test revealed, and what you would change in version two. That last part matters most. In the real module, marks live in the honest reflection, not in pretending the design was perfect.
What you just did is structurally identical to a postgraduate assessment: research, persona, competing sketches, a prototype, a user test and a reflective report. The university version adds referencing, word counts and eight weeks of readings, but the thinking is the same thinking. Which is the real question this page was built to answer: did those two hours feel like homework, or did they feel like a Tuesday you would happily repeat? Take that answer seriously.
Keep the artefacts. Photograph the sketches, keep the one-pager. If you do end up applying for a design course, a small folder of self-directed projects exactly like this one is what portfolios and interviews are made of.