Verulam Blue Mint

Follow the Verulam Blue Mint YouTube channel for short, practical walkthroughs where we take messy real-world datasets and turn them into clean, KPI-ready outputs step by step.

- Verulam Blue Mint is a free, browser-based training platform for practising end-to-end analytics work — not SQL syntax drills.

- You get a messy dataset (the kind you actually see in real teams).

- You get a clear brief (business rules + KPIs to deliver).

- You write can use SQL, dbt or PySpark to clean, validate, and standardise the data (formats, duplicates, rule enforcement).

- You then compute KPI outputs that match the brief.

- The platform auto-checks your results, so you know what’s correct without guessing.

- The outcome is portfolio-ready evidence you can share and explain in interviews.

https://verulamblue.com/challenges