Interactive animations and in-browser coding environments. No setup required.
Master essential SQL skills. Learn to query databases, filter data, aggregate information, and combine tables with JOINs.
Take your SQL to the next level. Master CASE statements, window functions, CTEs, and advanced analytics.
Master the highest-leverage advanced SQL skill. OVER(), ranking, LAG/LEAD, frame clauses, multi-dialect quirks, and the performance patterns that make analytical SQL fast.
From hypothesis to production. Master the statistical, engineering, and interpretive skills FAANG data scientists use to run experiments that hold up — and the modern techniques (CUPED, sequential, bandits) that separate L5+ from the rest.
How large language models actually work — from BPE tokens through RoPE attention, scaling laws, DPO/GRPO, KV caches, and mechanistic interpretability. Eight modules, eight interactive animations, beginner to advanced practitioner.
Master Python essentials for data science with interactive animations, live coding, and hands-on practice in your browser.
Master pandas for data science — DataFrames, selection, groupby, merging, reshaping, time series, and the performance patterns that separate hobbyists from professionals.
Build statistical intuition through interactive visualizations. Master mean, median, mode, spread, and data visualization.
The language of uncertainty — from coin flips to the math that powers every ML model. 8 modules with interactive animations, runnable Python, and the Streamora running dataset.
The supervised-learning loop the way working data scientists run it — regression, classification, regularization, cross-validation, pipelines. Every model trains live in your browser on the Lendly P2P-lending dataset, built on scikit-learn 1.3.
