This story was originally published on StartupCollective.

Question: What is your favorite online course (or site) to learn practical business skills and why?

Mixergy

“I’ve always loved the interviews on Mixergy. You get key lessons from people who have absolutely transformed industries. Each one is concise, fun to listen to and packed with powerful ideas to implement in your own business strategies. They are also available as a podcast, so it’s easy to take them with you.” — Patrick Conley, Automation Heroes

Hacker News

“I read Hacker News religiously. Even if you aren’t a programmer, it posts a ton of high-value content. In particular, keep an eye out for articles on startups written postmortem. Seeing what other founders wish they would have done in retrospect can save you from making the same mistake.” — John Rood, Next Step Test Preparation

Startups For the Rest of Us

“I’ve become…