Hi Paula, I hope you have read The Beginner's Guide to SEO by Moz. It is written in plain English as compared to many guides out there.
Also, are you or anybody on your team a technical person (techie or into tech)?
SEO takes time and it will usually take 3 to 6 months for you to see the impact. It can be even longer if your website is new. Thus, I recommend that you should place SEO as an ongoing effort rather than something to focus on to grow a marketplace like yours.
If you are interested, I can do an SEO audit for your website and provide a to-do list that you or your team members can start working on for a one time fee.
Send me a message,
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