I have an idea for a startup that I want to pursue. It's rooted in a problem I really want to solve, but I want to make sure before diving in, and devoting time to it, that it's viable.
Great question. Creating a proof of concept is usually the best step. To do this you often need very little.
I started an SEO company in Singapore 15 years ago from nothing. My first client purchased my services because I CREATED TRUST and I offered a clear VALUE package. I had no team - no office - and no commercial experience in SEO. I did however have confidence, business, and IT skills.
Always remember business is about exchanging VALUE for MONEY.
So make sure you have a CLEAR VALUE proposition and then go try sell it. See what happens. You will learn on your feet and get real market feedback.
And remember - money will only exchange hands if there is TRUST in place backed by VALUE.... the greater the trust and the greater the value, the faster the money will flow.