Close your skill gaps with resources that actually exist.

Free curriculum and videos on building products, talking to users and measuring growth.

Free lessons on descriptive statistics, probability, distributions and inference.

Official quickstarts that train and evaluate a first neural network.

Atlassian’s overview of the product manager role, the product lifecycle and key practices.

A thorough free tutorial from language basics to async code, modules and browser APIs.

The official walkthrough of the language: data types, control flow, functions, modules, classes and errors.

Guided, browser-based cybersecurity rooms and learning paths for beginners (free tier available).

Nielsen Norman Group’s foundation article on usability and why it matters.

Interactive animations that show how sorting, trees, graphs and other algorithms work step by step.

A practical guide to low- and high-fidelity wireframes and how to create them.

Nielsen Norman Group’s guide to choosing research methods across the product lifecycle.

A free course on designing and analysing online experiments.

A mature public design system showing foundations, tokens and components in practice.

LangChain’s official tutorial for building a question-answering app over your own documents.

A long-form video course explaining arrays, linked lists, trees, heaps, hash tables and graphs with code.

Free courses from dbt Labs on analytics engineering and data transformation.

Free one-hour courses on building with LLMs, RAG, agents and evaluation.

The official step-by-step guide to building Python APIs with FastAPI.