Close your skill gaps with resources that actually exist.

A complete beginner course on YouTube taking you from zero to writing small Python programs.

The official React documentation’s tutorial and guides: components, state, effects and thinking in React.

Mozilla’s structured curriculum for HTML, CSS and JavaScript.

Google’s fast-paced, practical introduction to machine learning with videos, explanations and exercises.

A video course that builds core ML models in Python with practical examples.

A practical analyst-oriented SQL tutorial from basics to window functions, with a built-in editor.

Free official courses on MongoDB fundamentals, data modelling and the aggregation framework.

The standard awareness document for the most critical web application security risks.

Hands-on lessons on indexing, grouping, sorting, data types and combining data in pandas.

How to write a product requirements document and what it should contain.

What a product roadmap is, how to build one and how to communicate it.

The free book on Git from the Git project: everyday workflow, branching, collaboration and internals.

Short, hands-on lessons with in-browser exercises covering syntax, functions, booleans, lists, strings and dictionaries.

Build your first CI workflow that runs on every push.

A beginner video course building real React components and apps.

Clear explanations of REST constraints, resource naming, methods and status codes.

Short interactive lessons that teach SELECT queries, joins, aggregates and schema changes in the browser.

A beginner video course that designs and queries a database from scratch.