Study Materials Hub
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Python for Data Science — Complete Notes
Syntax, Pandas, NumPy and plotting with worked examples.
SQL Joins & Window Functions Masterclass
Every join type plus window functions with practice queries.
Statistics for Analysts
Distributions, hypothesis testing, p-values and A/B testing.
Machine Learning Algorithms Explained
Intuition, math and sklearn code for 15 core algorithms.
Data Visualization Design Principles
Chart selection, colour and layout rules that improve clarity.
Power BI from Zero to Dashboard
Power Query, data modelling and DAX with a full project.
Tableau Calculated Fields Handbook
LOD expressions, table calcs and parameter-driven views.
200 Data Science Interview Questions
Python, SQL, ML and case questions with model answers.
Pandas + SQL Cheat Sheet Pack
Printable one-pagers for everyday data wrangling.
10 Clean Practice Datasets
Retail, HR, healthcare and finance datasets with prompts.
Deep Learning Notes with Keras
Neural nets, CNNs and RNNs with runnable notebooks.
Advanced SQL Interview Drills
Query puzzles asked in analytics interviews, with solutions.