A Sythe business or an IRL business?
I'm guessing Sythe as you asked where to post..
Truth is, there's no real section for asking for help to start a business - and not many people are gonna trust you with a start up loan until you've got a few more vouches and you're a bit more trusted. The best way is just to ask people you're already in contact with and that trust you enough already.
Let me know if you meant an IRL business, as that's dependant on where you live.