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Concept-based learning

Build the fundamentals behind modern tech roles, then connect each topic to interview-ready practice.

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Core Foundations

Build the base

Use these pages to strengthen programming, querying, version control, and database fundamentals.

Core

Python

Language fundamentals, data structures, functions, iteration, and production patterns.

Core

GitHub

Repositories, branches, commits, pull requests, collaboration, automation, and project workflow.

Core

SQL

Querying, joins, aggregation, windows, modeling, and analytics case thinking.

Core

DBMS

Transactions, indexes, normalization, storage, isolation, and database tradeoffs.

Math & Statistics

Reason with uncertainty and structure

Build the quantitative base for analytics, ML, experiments, and interview problem solving.

Math

Linear Algebra

Vectors, matrices, dot products, projections, embeddings, transformations, and ML intuition.

Math

Calculus

Derivatives, gradients, chain rule, integrals, and the math behind optimization and backpropagation.

Math

Probability

Events, conditional probability, Bayes thinking, expectation, variance, and common distributions.

Stats

Statistics

Distributions, inference, experiments, metrics, uncertainty, and decision making.

AI & Machine Learning

Move into modern AI roles

Learn the concepts behind model development, deep learning systems, and production AI applications.

Machine Learning

Modeling workflow, evaluation, features, bias-variance, and practical ML systems.

Deep Learning

Neural networks, optimization, CNNs, sequence models, transformers, and training behavior.

GenAI

LLMs

Tokenization, prompting, context, fine-tuning, evaluation, and deployment concerns.

GenAI

RAG

Chunking, embeddings, retrieval, reranking, generation, citations, and evaluation loops.

GenAI

AI Agents

Tools, planning, memory, guardrails, reliability, and workflow design.

Advanced

System Design for AI

Architecture, latency, cost, observability, evaluation, safety, and scaling tradeoffs.

Interview connection

Connect learning with interview practice

Use the interview hub to apply concepts through role, skill, cloud, and company-specific questions.

Skill questions Role roadmaps Curated resources