Before someone buys from you, there's a distinct chance that they're going to go to Google or Bing and search for your brand name or domain name. What appears on page 1 results will determine their impression. What happens when they visit the site will determine the lion's share of their opinion about the brand.
You could post a tender here and point out that you're looking to buy a couple of days time from someone, spread over the course of several days/weeks, and spec out what you'd like a hand with and the types of questions you'll have. You will likely get several responses. As to whether they know what they're talking about, that's another matter.
You could post a thread, like you've done here asking for a hand, give a bit more detail about what you've done and what you'd like to achieve, then work with a few people, see whose personalities you mesh with, and who you don't and then see where there's room for mentoring or possibly a JV of some sort.
For example, there's some excellent web developers on here, some great inbound marketers, some outbound/interruptive marketers and salespeople, accountants and much, much more. Each of them could potentially bring huge gains, provided it's sound advice and acted upon properly.
Personally, my background would probably lend itself mostly to helping you with building an online presence, establishing a couple of solid inbound traffic channels, planning and executing content that would be useful and well ranked. I've worked on projects like inoot.co.uk, ukgamegear and a number of other consumer ecommerce sites (under the 2geeks.eu domain), plus a lot more B2B projects ranging from managed VPS hosting to accountancy training and professional services (as carbide media).
Identifying the target buyer personas, where they consume information, getting valuable content in front of them, syndicating it socially, optimising it for search, extending the reach via list building / email nurturing drip campaigns, setting up the rank tracking, analytics and search console for monitoring effectiveness - basic inbound marketing 101 from start to finish - that's something I've done every day for a decade plus.
Wanna chat? Shout!