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125complete tracks

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24969practice drills

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Advanced

Programming

Actix Web

A high-performance Rust web framework.

5 lessons 1h Certificate

AI Literacy for Developers cover illustration

Popular

AI & data

AI Literacy for Developers

Use AI tools without outsourcing your judgement.

10 lessons 2h Certificate

Intermediate

Data engineering

Apache Airflow

Orchestrate data pipelines as code.

5 lessons 1h Certificate

AJAX & Async Requests cover illustration

Beginner

Web development

AJAX & Async Requests

Update the page without a full reload.

10 lessons 2h Certificate

Intermediate

Web development

Angular

A batteries-included framework for large, typed applications.

10 lessons 2h Certificate

Intermediate

Cloud & DevOps

Ansible

Agentless configuration management.

5 lessons 1h Certificate

Beginner

Web development

AppML

W3Schools’ data-driven HTML framework.

5 lessons 1h Certificate

Beginner

Web development

Classic ASP

VBScript server pages still found in older estates.

5 lessons 1h Certificate

Intermediate

Programming

ASP.NET Core

Cross-platform .NET web services.

5 lessons 1h Certificate

Advanced

Computer science

Assembly

Read the layer beneath every language.

5 lessons 1h Certificate

Intermediate

Web development

Astro

Content-first sites with islands of interactivity.

5 lessons 1h Certificate

Beginner

Cloud & DevOps

AWS

Amazon Web Services fundamentals.

5 lessons 1h Certificate

Beginner

Cloud & DevOps

Azure

Microsoft cloud fundamentals.

5 lessons 1h Certificate

Popular

Developer tools

Bash & Linux

The terminal skills every developer uses every day.

10 lessons 2h Certificate

Intermediate

Data engineering

BigQuery

Serverless analytics on Google Cloud.

5 lessons 1h Certificate

Beginner

Web development

Bootstrap 5

Ship polished responsive interfaces without writing every rule.

10 lessons 2h Certificate

Beginner

Programming

C Programming

Understand the machine underneath every language.

10 lessons 2h Certificate

Beginner

Cloud & DevOps

CI/CD

Automate tests and deployments.

5 lessons 1h Certificate

Advanced

Databases

ClickHouse

Columnar analytics for huge datasets.

5 lessons 1h Certificate

Advanced

Programming

Clojure

A Lisp for the JVM with immutable data.

5 lessons 1h Certificate

Intermediate

Security

Cloud Security

Identity, network and data protection in the cloud.

5 lessons 1h Certificate

Beginner

Cloud & DevOps

Cloudflare

CDN, DNS, security and edge compute.

5 lessons 1h Certificate

Beginner

Programming

COBOL

The language still processing banking and insurance.

5 lessons 1h Certificate

Intermediate

Programming

C++ Foundations

Expressive systems programming with clear ownership.

10 lessons 2h Certificate

Popular

Programming

C# Foundations

A modern, typed language for apps, APIs and games.

10 lessons 2h Certificate

Popular

Web development

CSS Essentials

Design interfaces that adapt to every screen.

16 lessons 4h Certificate

Popular

Security

Cybersecurity Foundations

Think like an attacker; build like an engineer.

10 lessons 2h Certificate

Beginner

Programming

Dart

The language behind Flutter.

5 lessons 1h Certificate

Beginner

AI & data

Data Visualisation

Charts that make the comparison obvious.

5 lessons 1h Certificate

Advanced

Data engineering

Databricks

Lakehouse analytics with Spark and notebooks.

5 lessons 1h Certificate

Intermediate

Data engineering

dbt

Transform data with SQL and tests.

5 lessons 1h Certificate

Intermediate

Security

DevSecOps

Security inside the delivery pipeline.

5 lessons 1h Certificate

Intermediate

Web development

Django

The batteries-included Python web framework.

10 lessons 2h Certificate

Popular

Developer tools

Docker Foundations

Package software once and run it anywhere.

10 lessons 2h Certificate

Data Structures & Algorithms cover illustration

Popular

Computer science

Data Structures & Algorithms

Choose the right tool and reason about cost.

10 lessons 2h Certificate

Beginner

Databases

DuckDB

Analytical SQL that runs anywhere.

5 lessons 1h Certificate

Intermediate

Databases

Elasticsearch

Search and analytics at scale.

5 lessons 1h Certificate

Intermediate

Programming

Elixir

Functional, concurrent programming on the Erlang VM.

5 lessons 1h Certificate

Intermediate

Security

Ethical Hacking

Test systems with permission and discipline.

5 lessons 1h Certificate

Beginner

AI & data

Excel

Spreadsheet analysis that runs the business world.

5 lessons 1h Certificate

Beginner

Web development

Express

The minimal Node.js web framework.

5 lessons 1h Certificate

Intermediate

Web development

FastAPI

Typed Python APIs with automatic docs.

5 lessons 1h Certificate

Intermediate

Web development

Fastify

A fast, schema-driven Node.js framework.

5 lessons 1h Certificate

Beginner

Web development

Flask

A small Python web framework.

5 lessons 1h Certificate

Intermediate

Programming

Fortran

Scientific computing that still runs the world’s simulations.

5 lessons 1h Certificate

Intermediate

Programming

F#

Functional-first programming on .NET.

5 lessons 1h Certificate

Beginner

Cloud & DevOps

Google Cloud

Google Cloud Platform fundamentals.

5 lessons 1h Certificate

Intermediate

Programming

Gin

A fast HTTP framework for Go.

5 lessons 1h Certificate

Beginner

Developer tools

Git & GitHub

Work like a professional team, even when you are solo.

16 lessons 3h Certificate

Popular

Programming

Go Foundations

Small language, direct concurrency, fast services.

10 lessons 2h Certificate

Beginner

AI & data

Google Sheets

Collaborative spreadsheets in the browser.

5 lessons 1h Certificate

Intermediate

Web development

GraphQL

A typed query language for APIs.

5 lessons 1h Certificate

Beginner

Programming

Groovy

A dynamic JVM language with concise syntax.

5 lessons 1h Certificate

Advanced

Web development

gRPC

Typed, efficient service-to-service RPC.

5 lessons 1h Certificate

Advanced

Programming

Haskell

A pure, statically typed functional language.

5 lessons 1h Certificate

Popular

Web development

HTML Foundations

Build the structure of every page on the web.

16 lessons 3h Certificate

Intermediate

Security

Incident Response

Handle security incidents without making them worse.

5 lessons 1h Certificate

Beginner

Programming

Java Foundations

Structured, portable software for real systems.

10 lessons 2h Certificate

JavaScript Foundations cover illustration

Popular

Web development

JavaScript Foundations

Make pages think, react and remember.

16 lessons 4h Certificate

Beginner

Web development

jQuery

Read and maintain the library behind millions of sites.

10 lessons 2h Certificate

Beginner

AI & data

Julia

Fast numerical computing with a friendly syntax.

5 lessons 1h Certificate

Intermediate

Data engineering

Apache Kafka

Event streaming for distributed systems.

5 lessons 1h Certificate

Beginner

Programming

Kotlin

A concise, null-safe language for Android and the JVM.

10 lessons 2h Certificate

Intermediate

Developer tools

Kubernetes

Run containers reliably without hand-managing machines.

10 lessons 2h Certificate

Intermediate

Web development

Laravel

A full-stack PHP framework.

5 lessons 1h Certificate

Beginner

Programming

Lua

A small, fast language embedded in games and tools.

5 lessons 1h Certificate

Machine Learning Basics cover illustration

Intermediate

AI & data

Machine Learning Basics

Build honest models, measure them properly and know their limits.

10 lessons 2h Certificate

Beginner

AI & data

MATLAB

Numerical computing and engineering analysis.

5 lessons 1h Certificate

Advanced

Computer science

Microservices

Design and operate small, independent services.

5 lessons 1h Certificate

Beginner

Databases

MongoDB Foundations

Model documents, query them precisely and grow safely.

10 lessons 2h Certificate

Beginner

Databases

MySQL

The database behind a huge share of the web.

10 lessons 2h Certificate

Advanced

Web development

NestJS

Structured Node.js with modules and dependency injection.

5 lessons 1h Certificate

Beginner

Computer science

Networking & HTTP

Understand what happens between a click and a response.

10 lessons 2h Certificate

Intermediate

Web development

Next.js

React with routing, rendering and APIs built in.

5 lessons 1h Certificate

Intermediate

Cloud & DevOps

Nginx

The reverse proxy in front of most of the web.

5 lessons 1h Certificate

Intermediate

Programming

Nim

Python-like syntax with C-level performance.

5 lessons 1h Certificate

Popular

Web development

Node.js Foundations

Build the server side with the language you already know.

10 lessons 2h Certificate

Intermediate

Web development

Nuxt

Vue with routing, data fetching and server routes.

5 lessons 1h Certificate

Intermediate

Cloud & DevOps

Observability

Logs, metrics and traces that explain production.

5 lessons 1h Certificate

Advanced

Programming

OCaml

A pragmatic functional language with a strong type system.

5 lessons 1h Certificate

Intermediate

Databases

Oracle SQL

SQL for Oracle Database.

5 lessons 1h Certificate

Pandas & Data Analysis cover illustration

Popular

AI & data

Pandas & Data Analysis

Turn messy tables into answers you can defend.

10 lessons 2h Certificate

Beginner

Programming

Perl

Text processing and system automation.

5 lessons 1h Certificate

Advanced

Web development

Phoenix

Productive Elixir web applications.

5 lessons 1h Certificate

Popular

Web development

PHP for the Web

Server-rendered pages, forms, sessions and a real database.

10 lessons 3h Certificate

Intermediate

AI & data

Polars

Fast DataFrames in Rust and Python.

5 lessons 1h Certificate

PostgreSQL Foundations cover illustration

Popular

Databases

PostgreSQL Foundations

The relational database behind serious applications.

10 lessons 2h Certificate

Beginner

AI & data

Power BI

Business intelligence in the Microsoft stack.

5 lessons 1h Certificate

Beginner

Developer tools

PowerShell

Automate Windows and cross-platform tasks with objects.

5 lessons 1h Certificate

Intermediate

Web development

Progressive Web Apps

Installable, offline-capable web apps.

5 lessons 1h Certificate

Popular

Programming

Python Foundations

The most readable way to start programming.

16 lessons 4h Certificate

Beginner

AI & data

R

Statistical computing and data analysis.

5 lessons 1h Certificate

Intermediate

Web development

Ruby on Rails

Convention-driven full-stack development.

5 lessons 1h Certificate

Beginner

Developer tools

Raspberry Pi

Small computers, GPIO and Linux projects.

5 lessons 1h Certificate

Popular

Web development

React Foundations

Build interfaces from small, predictable components.

10 lessons 2h Certificate

Intermediate

Databases

Redis

In-memory data structures for speed.

5 lessons 1h Certificate

Intermediate

Web development

Remix

Web fundamentals with nested routes and server data.

5 lessons 1h Certificate

Intermediate

Programming

Rust Foundations

Ownership, safety and performance without a garbage collector.

10 lessons 2h Certificate

Intermediate

Web development

Sass

A better stylesheet language that compiles to CSS.

10 lessons 2h Certificate

Intermediate

Programming

Scala

Functional and object-oriented programming on the JVM.

5 lessons 1h Certificate

Intermediate

Data engineering

Snowflake

Cloud data warehouse with separated compute and storage.

5 lessons 1h Certificate

Intermediate

Blockchain

Solidity

Smart contracts for the EVM.

5 lessons 1h Certificate

Intermediate

Web development

SolidJS

Fine-grained reactivity with JSX.

5 lessons 1h Certificate

Advanced

Data engineering

Apache Spark

Distributed data processing at scale.

5 lessons 1h Certificate

Advanced

Programming

Spring Boot

Production Java services with minimal setup.

5 lessons 1h Certificate

Beginner

Databases

SQL & Databases

Ask better questions of your data.

16 lessons 4h Certificate

Intermediate

Databases

SQL Server

Microsoft’s relational database.

5 lessons 1h Certificate

Beginner

AI & data

Statistics

Reason about data without being fooled.

5 lessons 1h Certificate

Intermediate

Web development

Svelte

Compiled reactivity without a virtual DOM.

5 lessons 1h Certificate

Intermediate

Web development

SvelteKit

The full-stack framework for Svelte.

5 lessons 1h Certificate

Beginner

Programming

Swift

Apple’s language for apps across every device.

10 lessons 2h Certificate

Beginner

AI & data

Tableau

Visual analytics with drag-and-drop.

5 lessons 1h Certificate

Popular

Web development

Tailwind CSS

Build interfaces with utilities, tokens and a real design system.

10 lessons 2h Certificate

Intermediate

Developer tools

Tauri

Small, secure desktop apps with web UI and Rust.

5 lessons 1h Certificate

Intermediate

Cloud & DevOps

Terraform

Declarative infrastructure across providers.

5 lessons 1h Certificate

TypeScript Foundations cover illustration

Popular

Web development

TypeScript Foundations

JavaScript with a compiler on your side.

10 lessons 2h Certificate

Beginner

Game development

Unity Foundations

Turn an idea into a playable 3D scene.

10 lessons 2h Certificate

Beginner

Programming

VB.NET

Visual Basic on the .NET platform.

5 lessons 1h Certificate

Popular

Web development

Vue 3

The progressive framework for interfaces that stay understandable.

10 lessons 2h Certificate

Beginner

Web development

W3.CSS

A small utility CSS framework from W3Schools.

5 lessons 1h Certificate

Intermediate

Security

Web Security

Defend the browser, session and API.

5 lessons 1h Certificate

Advanced

Web development

WebRTC

Peer-to-peer audio, video and data.

5 lessons 1h Certificate

Intermediate

Web development

WebSockets

Two-way realtime communication.

5 lessons 1h Certificate

Beginner

Data & formats

XML

Structured data, schemas and the formats built on XML.

10 lessons 2h Certificate

Advanced

Programming

Zig

A small, explicit systems language.

5 lessons 1h Certificate

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Tutorials that respectyour time.

All courses

Actix Web

AI Literacy for Developers

Apache Airflow

AJAX & Async Requests

Angular

Ansible

AppML

Classic ASP

ASP.NET Core

Assembly

Astro

AWS

Azure

Bash & Linux

BigQuery

Bootstrap 5

C Programming

CI/CD

ClickHouse

Clojure

Cloud Security

Cloudflare

COBOL

C++ Foundations

C# Foundations

CSS Essentials

Cybersecurity Foundations

Dart

Data Visualisation

Databricks

dbt

DevSecOps

Django

Docker Foundations

Data Structures & Algorithms

DuckDB

Elasticsearch

Elixir

Ethical Hacking

Excel

Express

FastAPI

Fastify

Flask

Fortran

F#

Google Cloud

Gin

Git & GitHub

Go Foundations

Google Sheets

GraphQL

Groovy

gRPC

Haskell

HTML Foundations

Incident Response

Java Foundations

JavaScript Foundations

jQuery

Julia

Apache Kafka

Kotlin

Kubernetes

Laravel

Lua

Machine Learning Basics

MATLAB

Microservices

MongoDB Foundations

MySQL

NestJS

Networking & HTTP

Next.js

Nginx

Nim

Node.js Foundations

Nuxt

Tutorials that respect
your time.