Courses from 1000+ universities
When Canada, the UK, Australia and the US tightened student visas, the IELTS co-owner placed about half as many students, and its profit nearly disappeared.
600 Free Google Certifications
Data Analysis
Digital Marketing
Programming
Introduction to Computer Science and Programming Using Python.
An Introduction to Interactive Programming in Python (Part 1)
Mathematical Economics
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Learn a skill. Earn a certificate. Add it to your resume. Data science, generative AI, project management, cybersecurity, business, design, and more — there's a certificate for every career goal.
Learn to defend personal and organisational assets from phishing, ransomware and identity theft, build a workplace cyber awareness culture, and lead teams through incidents and governance.
Learn to use Redis with Python, from core data structures and transactions to high-performance applications and a Redis-backed backend system.
Build automated Excel models, dashboards, and data-driven reports using advanced formulas, dynamic lookups, macros, and statistical analysis tools on real datasets.
Connect JavaScript applications to APIs through HTTP requests, secure authentication, efficient interactions, and automated testing.
Learn to design, secure, and tune relational databases in MySQL, PostgreSQL, and IBM Db2, writing SQL queries, building data warehouses, and automating ETL with Airflow and Kafka.
Build recurrent neural networks in PyTorch to forecast univariate and multivariate time series with LSTMs and GRUs.
Learn software development foundations: design, architecture and the development lifecycle, Git and GitHub repositories, Linux commands and Bash scripts, and coding apps with Python and Flask.
Build a TypeScript agentic application using the 12-Factor Agents methodology, with stateless design, pause-and-resume functionality, and API integration.
Running a security and privacy program is a different job from running a secure system. This course covers the organization-wide work: governance, strategy, risk, controls, assurance, and the leadersh
Build secure, production-ready applications while learning modern development workflows, CI/CD, and AI-specific security practices.
Practical security awareness for the whole government workforce
Leverage Claude to simplify and strengthen every stage of your real estate business, from crafting compelling listing content to closing the deal, with a personalized workflow designed to support your
Understand 'never trust, always verify' and the strategy driving it
Give the whole cyber workforce a working command of how AI and machine-learning systems get attacked and defended, anchored in MITRE ATLAS, the OWASP LLM Top 10, and the NIST AI RMF.
Master the single practice that prevents most social engineering attacks from working: confirm authenticity before you respond — whether the request arrives by email, text message, phone call, QR code
Get personalized course recommendations, track subjects and courses with reminders, and more.