Close your skill gaps with resources that actually exist.

The University of Helsinki’s free, in-depth course on modern web development with React, Node and TypeScript.

HashiCorp’s official tutorials for provisioning cloud infrastructure as code.

The official guide to GraphQL concepts, schemas and queries.

The official interactive tutorial: deploy, expose, scale and update an application on a cluster.

The official PyTorch tutorial series: tensors, datasets, models, training loops and saving.

Hugging Face’s free course on transformers, fine-tuning and building with language models.

Google’s design system documentation: foundations, components and guidance.

The knowledge base of adversary tactics and techniques used to frame detection and response.

An overview of MLOps: the machine learning lifecycle, CI/CD for ML and monitoring.

A structured practice path through the coding-interview problem patterns, with video explanations.

Concise, practical guidance on secure development topics from authentication to logging.

The official introduction: creating tables, querying, joins, views, transactions and window functions.

fast.ai’s free, code-first course that builds real deep learning applications.

The official overview of metrics-based monitoring and alerting.

The official guide to building mobile apps with React Native.

Free courses from Redis on data structures, caching and common patterns.

The official reference and guide for supervised and unsupervised learning in Python.

MIT’s practical course on the shell, editors, version control, debugging and the tools developers use daily.