In the beginning of a company, there is no management and this actually works really well.
The track record for founders that don't already know each other is really bad.
Be suspicious of any work that is not building product or getting customers.
Experience matters for some roles and not others.
1 of the hardest parts about being a founder, is that there are a 100 important things competing for your attention each day.
If you're not in college and you don't know a cofounder, the next best thing I think is to go work at an interesting company.