The upfront money you need to establish your software empire. I think $100 is all you need.
If you're going to hire a bunch of engineers, designers, C-level executives, and rent out a plush penthouse floor in Manhattan, then you'll be chasing a little bit more than $100, and this book is possibly not for you.
My book "Choose Your First Product" is available now.
It gives you 4 easy steps to find and validate a humble product idea.