Three tasks for lesson 1 — no tools to build yet, just the judgement that makes everything later work. Every task has two halves: a puzzle that sharpens your eye (instant feedback, and the reasoning once you've solved a round), then a real conversation with a course agent — the composer opens with a draft, you shape it, send it, and check what comes back.

• 🟢 Easy · Meet the words — seven situations, five words; then the Advisor quizzes you on ones nobody prepared.
• 🟡 Medium · Your first brief — find what's wrong in four briefs, then fix a rough one and send it to the Planner for a real quote.
• 🔴 Hard · The right tool — six situations, six tempting wrong moves — then let the Planner prepare a discount decision, and make it.

Every task has a solution page. Read it after your own attempt — there is rarely a single right answer, only reasoning you can defend to Lena.