If you pivot, do it fully and with conviction. The worst thing is to try to do a bit of the old and the new-it's hard to kill your babies.
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.
Growth solves (nearly) all problems
One thing that founders always underestimate is how hard it is to recruit.
The cost of getting an early hire wrong is really high.
Most great companies in tech have been built by personal referrals for the first...at least 100 employees and often many more.