This is a complex question, if you haven't realized. I'm assuming you must already have certain goals you want to measure you're success rate by, possibly some market analysis to compare your goals versus existing competitors. Based on these qualitative and quantitative factors would you decide what is the best approach for your finances, bottom line, industry, product and pricing.

Does your product allow for commission markup or would have to cut it as expense?
Does your product need a sales person/demos? Or would it be better to push through traditional print marketing, social media and SEO?

Those are just some thoughts if you really want to be as efficient as possible running your business well from the start.
One example though:
What i have done in the past with moderate success is use craigslist to post job offerings to contractors. Interview them by phone call and Skype, don't offer marketing assets until their 1,2, or 3rd sale depending on what you are selling, for us is web design and digital marketing services. Then offer them 1099 payment, offer them business card if needed and other marketing assets such as email or dedicated link.
Your product might not need a sales person at all, some products rarely do but yours might be one - you didn't mention.

I hope that helps you a bit, if you have any further questions or want guidance please do give me a call I don't let down.

Humberto Valle
Unthink.Me