Even though plans themselves are worthless, the exercise of planning is very valuable and totally missing in most startups today.

It's better to have no cofounder than to have a bad cofounder, but it's still bad to be a solo founder.

Someday, you need to build a business that's difficult to replicate. This is an important part of a good idea.

You should always know how you're doing against your metrics. You should always have a weekly review meeting every week.

You need to have a culture where people have very high quality standards in everything the company does, but still move quickly.

Experience matters for some roles and not others.

The second part of how to hire: try not to.