Antti Akonniemi

Boy do I wish we had Khan Academy back in the day when I was trying to study. I’ve spotted about Khan Academy many times before in discussions at Hacker News, but after listening to This Week in Startups episode with the founder Salman Khan I was SOLD. And even more so after watching few of his videos. What an excellent way to teach and learn. Simple, yet effective.

Good and pretty much universal examples how it works:
Renting vs. Buying a Home
Renting vs Buying a Home Part 2