Forget overpriced schooling, long days in a crowded classrooms, and pitifully poor results. These websites myriads of science, art, and technology topics and they will teach you practically anything.
There is absolutely no excuse for you not to master a new skill, expand your knowledge, or eventually boost your career.
TED-Ed — Use engaging videos on TED-Ed to create customized lessons. You can use, tweak, or completely redo any lesson featured on TED-Ed
Khan Academy — You can learn anything. Expert-created content and resources for every subject and level. Always free.
Guides.co — This right here is a free publishing and hosting platform for sharing information. Everyday thousands of authors, bloggers, marketers, teachers, and researchers use Guides to organize, share and evolve knowledge.
Squareknot— This website lets you make beautiful, branching step-by-step guides.
Pearltrees— A place to organize all your interests. It lets you organize, explore and share everything you like.
Mentormob— It is unique because its goal is to collect resources into instructional playlists that have the purpose of teaching users how to do something new.