Coursera

Coursera is one of the world's largest online learning platforms. It brings together courses from prestigious universities (Yale, Stanford, Imperial College) and companies like Google, IBM, or Meta in one place. It suits anyone who wants to grow — whether you're starting from scratch or topping up a specific skill for a new career or your own business.

The idea is simple: you pick a course, a specialization, or a professional certificate and work through video lessons at your own pace. The material is interspersed with quizzes, hands-on assignments, and projects that the system grades, so you can really see how you're doing. Most courses can be taken for free in audit mode, and you only pay for the certificate when you actually need to prove it.