There are several platforms for e-learning,
- EdX – Coursera: courses from universities, paying for the course gives access to the certificate and extra material
- Udemy: courses made by experts – pay per course
- Khan academy: if you just want to learn – free
- Codecademy: interactive platform to learn coding – subscription fee
- Datacamp: interactive platform to learn coding – subscription fee
- Codecombat: learn coding by playing – subscription fee