Explore courses

Harvard's SQL course combines querying, relational database design, data modification, and performance concepts with problem sets.

Short SQL explanations paired with browser exercises, useful for practicing SELECT statements, joins, aggregates, and data changes.

The official introduction to PostgreSQL, combining a first SQL workflow with relational concepts and features of the database itself.

A Git course covering everyday commits and branches, conflict resolution, remotes, history inspection, and the mechanics behind version…

A practical introduction to container images, volumes, networking, multi-container applications, and the move into Kubernetes deployment.

An AWS fundamentals and exam-preparation course organized around the Cloud Practitioner syllabus and common cloud-service concepts.

Official Terraform learning paths for infrastructure configuration, the plan-and-apply workflow, state, modules, and provider-specific…

A free technical course on transformers, tokenizers, datasets, model fine-tuning, and the practical Hugging Face ecosystem.

A nontechnical introduction to AI concepts, project opportunities, organizational decisions, and the limits of what AI can reliably do.

Official task-based pandas tutorials for reading tables, selecting data, calculating summaries, reshaping information, and combining…

An entry-level cybersecurity program introducing security operations, networks, Linux, SQL, Python, and investigation workflows.

Free web-security explanations and deliberately vulnerable labs for practicing how application flaws are found, understood, and tested.

Explore Josh Paulsen’s course on planning, procrastination, and everyday distractions. Consider its older material and test one change to…

Compare Steve Ballinger’s practical time-management lessons on task batching, focus timers, email, and priorities, with a small routine to…

Explore Transformation Services’ time-management course for weekly plans, distractions, and priorities, with guidance on applying its…

Explore UC Irvine’s Coursera course on planning, delegation, and communication, including its assessments, certificate access, and practical…

Study Saylor’s free PRDV005 course on time use, workplace productivity, and everyday stress. Check its study commitment and certificate…

A long, project-led JavaScript course covering browser interactions, asynchronous code, and the language underneath the frameworks.

Academind's broad JavaScript course, from first functions to browser APIs, object-oriented code, and asynchronous programming.

An extensive React curriculum covering components, hooks, application state, routing, and a move into full-stack work with Next.js.

Project-based React study that moves from component thinking into larger applications, state tools, and Next.js server features.

A full-stack Next.js course with App Router projects, server and client components, data mutations, and material on the older Pages Router.

The official written Next.js dashboard tutorial, connecting routing, database reads, streaming, forms, authentication, and metadata.

An older project course using a music-events app and Markdown blog to teach Next.js, Strapi, authentication, and deployment.