I never knew this existed!

Pros:

• Free resources on subjects typical universities will charge thousands
• Courses aren't too specific that anyone can take regardless with familiarity to subject

Cons:

• Lack of "on demand" skill course, most subjects are surface level
• Courses are still limited, maybe more courses to be added with time?

I wonder though how they finance their operations, will there be premium accounts? is it based on donations?