Welcome

Welcome to the General Data Science – Free Q&A Guide by Complex Data Insights (CDI).

This guide is designed for beginners who want to build a strong foundation in data science using Python and R side by side. You’ll start with approachable questions and follow step-by-step solutions that explain not just the how, but also the why behind each task.

We believe the best way to learn is by doing. That’s why this guide uses real code, real data, and practical questions to walk you through key skills in Exploratory Data Analysis (EDA) and Visualization.

You’re not just picking up syntax — you’re learning how to explore, reason, and think like a data scientist.