● Free Data Course · SQL · Python · Pandas · 580+ Exercises
Free Data Course
From the basics all the way to job-interview level — a practical, free data course covering SQL, Python, and Pandas. 580+ interactive exercises, 5 simulators, and case-study simulations for analysts.
🗺️ View Your Learning Path
🐍 Python Course (170 exercises)
🐼 Pandas Course (150 exercises)
💯 Python Quiz 100
🎮 Python Playground
🚀 Guided Projects
SQL instructor and analytics team lead at Partner, with years of hands-on experience in data.
My goal — to teach data for free, simply and accessibly to everyone — and to bring real-world experience to anyone who wants to grow in the field and succeed in job interviews.
27
Lessons
580+
Exercises
24K
Rows in simulator
🆓
Completely free
Multiple-Choice Questions — Pick a Level
LEVEL 1
Beginner
150
questions
SELECT · WHERE · GROUP BY · JOINs
LEVEL 2
Intermediate
80
questions
Strings · Aggregation · Advanced JOINs
LEVEL 3
Advanced
60
questions
Subqueries · Window Functions
🔥 Hardest
LEVEL 4
Expert
20
questions
Choose the correct query
More Tools
🎯
Full Practice — 135 interactive SQL questions
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⚡
SQL Simulator
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📊
Power BI Simulator — DAX & dashboards
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🎯
Interview Practice — Customer Churn (Telecom)
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🏛️
Interview Practice — Management Fees (Insurance)
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📚
Learning Material
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✏️
Practice Exercises
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🌱
Multiple-Choice — Beginner
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🧠
Multiple-Choice — Advanced
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📘
Function Reference
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🎬
Video Tutorials — MySQL
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🖥️
Video Tutorials — SQL Server
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🛠️
Setup Guide
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