- New
Linear Regression for Beginners: Fit the Line, Predict with y = mx + b
Learn linear regression for beginners: fit y=mx+b with least squares, read R² and RMSE, work two verified examples, then run a free local Python lab.
- New
Linear Regression with Multiple Regression: OLS in Matrix Form, Diagnostics, Ridge and Lasso in Python
Multiple linear regression in Python at expert depth: OLS normal equations, a worked example, VIF and Cook's diagnostics, Ridge vs Lasso, and three labs.
Student cheat sheet · Interactive quiz · Expert · next level after the beginner tutorial
Linux from Scratch: A Practical Command-Line Course
Learn Linux from scratch: terminal, files, vim, bash, permissions, processes, scripting, packages (apt & dnf), users, and networking — 19 modules with labs.
- New
Linux File Permissions Quest
Interactive quest on Linux file permissions: rwx, ownership, reading ls -l, chmod absolute and symbolic modes, chown, sudo, setuid, setgid, sticky bit and umask.
16 levels · 6 hands-on labs · practice terminal · Octal Dojo · 20-question quiz
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Linux Process Management Lab
Interactive lab on Linux processes: PIDs, ps, pstree, top, kill and signals, nice and renice, job control, at and cron, with beginner, intermediate and expert paths.
8 hands-on labs · practice terminal · 30 MCQs · FAQ and practice Q&A
RAG Tutorial Python: Build a RAG App Step by Step
Build a RAG app in Python step by step: chunking, embeddings, cosine similarity search, prompts, Amazon Bedrock generation and retrieval evaluation.
AI & Machine Learning Foundations — Student Study Guide
Free interactive tutorial by Pushpjeet Cholkar: AI, machine learning, deep learning, generative AI, RAG and AWS AI services, with quiz, flashcards and glossary.
GANs, VAEs and Latent Space
A simple, practical explanation of latent space, Variational Autoencoders (VAEs) and Generative Adversarial Networks (GANs), with a video lesson, diagrams and self-check questions.
AI & ML Quest | Pre-learning for Day 1
An interactive, gamified warm-up on the fundamentals of AI and machine learning: the AI family, data, training, inference, deep learning, generative AI and AWS services.
Rise of the AI Agents | AI & ML Quest
Bonus tutorial: what AI agents are, the think-act-observe loop, tools, human-in-the-loop safety and agents on AWS.
ML Solutions Quest | Pre-learning for Day 3
An interactive, gamified warm-up on developing machine learning solutions: the ML lifecycle, SageMaker AI, model sources, fitting, evaluation metrics, deployment and MLOps.
The Goldilocks Problem | AI & ML Quest
Video tutorial: how AI balances the bias-variance trade-off, with a scene-by-scene walkthrough and games.