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I have a woo commerce shop in the firearms industry which makes advertising even more difficult because no FB, IG, or Google campaigns. I do have other sources of advertising but I'm a complete noob when it comes to SEO and the like. I know it exists and its important and that's the extent of it. I was thinking of hiring someone on Upwork to take care of this on my website but what kinds of questions/things I should look out for to keep from getting scammed?

Any tips would be appreciated

When I create a website for my clients, I always put our website link in the footer of the description, just to say 'powered by ieatdoorframes' with a link to our website. On SEMrush, its showing as a negative backlink with the reason 'compound', suggesting its a 'money term'. I add this link as I've had success getting new work from clients who like the site we built. I'm new to these terminologies and wondering what I should do?

Let's say I want to write a guest post for a website that is relevant to my website.

Should i guest post on a website with high traffic but the traffic country is not mine? (eg// My website sells products in Canada only, should i guest post on a high traffic site from India?)

Or would it be better to find a lower traffic website to guest post on but their organic traffic comes from Canada?

Thanks!