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| Course | Provider | Price | Why pick this one |
|---|---|---|---|
| Six Sigma: Certified Lean Six Sigma White Belt (Accredited) | Udemy | Free | Free — and still gives a certificate |
| Project Management 101 | PM101 | Project Management Basics | Udemy | Free | Free — certificate included |
| Mandarin Chinese 1: Chinese for Beginners | Coursera | Free | Highest rated (4.8★ from 1.4K reviews) |
| Learn SQL | Codecademy | Free | Free — certificate included |