Open Library – free digital book lending. How to get a “library card”? An email address.

Instructables – learn how to make anything step-by-step. From candle-making to building 3D printers.

Untools – a collection of thinking tools and frameworks including:
- Systems thinking
- Decision making
- Problem solving
- Communication

Stanford eCorner – wisdom from people who’ve built successful startups. Hear from top founders, venture capitalists, and professors.

Duolingo – learn 30+ languages online for free. Makes the experience gamified and fun.

Coursera – an extensive list of free courses from top companies and universities. World-class instruction. Master the material.

YouTube – undefeated, probably the best learning resource out there. Listen to countless hours of educational material.
Channels that will make you smarter for free:
