Paul Graham is a tech investor - he founded the top startup incubator, Y-Combinator, among other things. In Silicon Valley, he is among the most sought-after advisers for entrepreneurs. He's the real deal. If there's one site entrepreneurs should read, it's probably this. He writes on tech, but his thoughts/advice can apply across other industries as well. Check out his essay link for his writings.
Have you ever want to learn something, like history, economy, science? Crash Course is a free learning channel on YouTube with many courses for kids and adults, and they just added a new channel specially designed for kids: Kids Science. Great learning resource leveraging the new technology, for school supplements, or for homeschool.