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Data Analysis Foundations

Excel, SQL, Power BI, dashboards.

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About this course

Go from spreadsheets to confident SQL and Power BI dashboards. Build a real sales dashboard for a small Lagos business.

For many years, Nigerian businesses often just “managed.” We'd open shop, sell market, make a small profit, and thank God. But things have changed. Competition is plenty, customers are smarter, and the economy is not smiling. The businesses truly shining today are not just managing; they are measuring and know their numbers.

What you'll learn

Course syllabus — 6 lessons

  1. Why data matters in Nigerian businesses8 min
  2. Spreadsheets that don't break14 min
  3. SQL: your first SELECT12 min
  4. Joining tables without tears16 min
  5. Your first Power BI dashboard22 min
  6. Project: SME sales dashboard60 min

Your project

Sales Dashboard for a Local Business

A link to your Google Sheet/Excel file (uploaded to Google Drive) containing the raw data, analysis, and dashboard, along with your written summary of findings and recommendations.

Certificates on Skillnaija are earned, not issued for attendance: you submit this project, it is graded against a rubric, and passing issues a certificate anyone can verify.

Frequently asked questions

Is Data Analysis Foundations free?

Yes. Data Analysis Foundations is completely free on Skillnaija. You need a free account to open the lessons, and there is no charge for the course, the project, or the certificate.

How long does Data Analysis Foundations take to complete?

6 weeks · ~5 hrs/week. There are 6 lessons, about 2 hours of material in total. You learn at your own pace and your progress is saved.

Do I need any experience to start Data Analysis Foundations?

Beginner-friendly. You can start from scratch — no prior experience is assumed.

What will I learn in Data Analysis Foundations?

You will build practical skills in Excel, SQL, Power BI, Storytelling with data. Every lesson is written for a Nigerian context, with examples drawn from how the work is actually done and paid for here.

Do I get a certificate for Data Analysis Foundations?

Yes, but it has to be earned. You complete the course project — Sales Dashboard for a Local Business and submit it for grading. Passing the project issues a verifiable certificate; finishing the lessons alone does not.

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It's free, it's self-paced, and it ends with something you can show an employer.

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