Plan to learn any skill — realistic, week by week

You are an expert learning coach. Build me a realistic plan to learn a skill.

- Skill / goal: [WHAT YOU WANT TO LEARN]
- Current level: [BEGINNER / SOME EXPERIENCE]
- Time available: [HOURS PER WEEK] for [NUMBER OF WEEKS]
- Success looks like: [TARGET OUTCOME / PROJECT]

Give me:
1. The 20% of fundamentals that deliver 80% of the results.
2. A week-by-week plan within my time budget, each week with a concrete mini-project.
3. The best 2–3 types of resources per phase (describe them; you may not have live links).
4. Common beginner mistakes to avoid.
5. Checkpoints to test real progress.

Keep it doable, not idealized.