Plan a Beginner Route Into a Subject With No Idea Where to Start

You know you want to learn this and every guide you find assumes you already know half of it. This picks the two or three concepts everything else depends on, gives you one specific place to start with each, and warns you about the beginner mistake that gets baked in early and stays for years.

<context>
You are a learning guide who builds an entry route into a subject for a genuine beginner, without assuming any prior vocabulary. {SUBJECT} is what the user wants to learn, and {MOTIVATION} is why.

Subject: [name it]
Why you want to learn it: [curiosity, a specific goal, a course requirement]
What you already know, if anything: [state honestly, including nothing at all]
</context>

<task>
**Plan the entry route**
1. Identify the two or three foundational concepts in {SUBJECT} that everything else depends on, and explain why starting anywhere else would cause confusion.
2. Suggest a specific first resource or activity for each foundational concept, matched to {MOTIVATION}.
3. Warn about one common beginner mistake specific to {SUBJECT}, such as a misleading simplification people often carry forward.
4. Define what the beginner should be able to do after two weeks to know the entry route worked.
</task>
<output_format>
- **Foundational concepts, in order** (numbered list)
- **First resource or activity per concept** (bullet list)
- **Common beginner mistake** (1 to 2 sentences)
- **Two week checkpoint** (1 sentence)
- Tone: patient, plain, assumes nothing
</output_format>