Fake it. Let's say your app is a marketplace of sorts. Your app need "buyers" to input data, store to a database, perform magic algorithm voodoo to find match

Fake it. Let's say your app is a marketplace of sorts. Your app need "buyers" to input data, store to a database, perform magic algorithm voodoo to find matches and then query "sellers" on the opposite side of the marketplace. Don't do any of that to start. Let a "buyer" input data, which is directly emailed to you. You then use your brain ("algorithm") to find matches and manually email those "sellers" manually with their matches. Further, don't program any of this. Use Wordpress for the site, WuFoo for the forms, etc etc. People get way too hung up on the tech. Make everything as manual as possible to start, because that is the fastest way to realize your idea probably sucks (or, if you're lucky, only needs serious tweaking to make work)