Validating something needs to get traction quickly
Jason Cohen has some great advice that if a new product isn’t getting sales after 2 months, either no one wants it or you’re not talking to the right customers.
As knowledge gets more and more commoditized, you don't need to add more modules to your course. You need to...
Advice from Dharmesh (founder of HubSpot) on putting out prototypes versus products.
If you want to know if your idea’s legit? See if someone pays you money for it.
Ayman has some great advice for having an idea client when building. For AppSumo, Ayman created a persona called “Marketing...

I've seen a lot of people work on business ideas (and been guilty of this too) that build things that...

This is Greg Eisenberg's career advice for growing an audience and building a product out of it through this method....