Links

Recommended Educational Resources:

Coursera - "Take the world's best courses, online, for free." No, really: full lectures from 80+ major universities all over the world, complete with homework assignments and assessments integrated into 4-8 week courses on every subject and level imaginable.
EdX - MIT and Harvard's alternative to Coursera.
CodeAcademy - Learn basic programming skills in JavaScript, Python, and more through an interactive web-based environment.
MIT OpenCourseWare - free course materials from past courses taught at MIT
Stanford Engineering Everywhere - free complete course materials from several of Standford's engineering sequences

Recommended YouTube Channels:

Vihart for fun math videos
Vsauce and Vsauce2 for fascinating facts, creations, and internet finds
SciShow for all things science related
mental_floss for bizarre bits of knowledge arranged in lists
MinutePhysics and MinuteEarth for interesting facts about physics and planet earth, respectively
Crash Course! - the best way to learn everything, or at least the most entertaining

Assorted interesting finds:

The only MMORPG you'll ever need to play:

Also, you may find this and this helpful.

Recommended Webcomics**:

sarcasm, math, and language

**Note: Most of the above webcomics have a rollover text. SMBC has a red button.