Cal here from Shopify, thanks for reaching out to us.
SEO is definitely important as you grow your business and want more organic traffic reaching your store. There are a couple of steps that you can take to get a headstart with SEO, along with some resources.
1) Finding and submitting your sitemap: this is essential for indexing your site to help it appear on Google search. You can see how to do it here.
2) SEO bible: we have lots of amazing blog posts on optimizing your site for search rankings. They are essential reading and can be found here.
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