We recommend: Free online courses / Recomendamos: Cursos online gratuitos

The Stanford University offers interesting free online courses. Check them!
La universidad de Stanford ofrece interesantes cursos gratuitos online:

Lean Launchpad

Technology Entrepreneurship

Anatomy

Making Green Buildings

Model Thinking

CS 101

Machine Learning
Software as a Service

Human-Computer Interaction

Natural Language Processing

Game Theory

Probabilistic Graphical Models

Cryptography

Design and Analysis of Algorithms I