I never had my own "startup" per se, but I did start a web business right out of high school, what I learned from that: 1. Don't give up easily. I had like 5k

I never had my own "startup" per se, but I did start a web business right out of high school, what I learned from that: 1. Don't give up easily. I had like 5k in revenue per month out of the gate and I shut it down... which leads me too... 2. Manage your money well. I mostly couldn't manage the business by myself, handling SEO, SEM & Other affiliated tasks, while packing/shipping orders, developing and paying quarterly sales tax, properly writing things off... which leads me too... 3. Find a good co-founder, but really truly, no matter what, be able to rely on that person and let them be able to really rely on you.