Hello EmilyC,
If you really have no knowledge in the field of creating an online store, and more generally in the creation of a website, I think it is better that you go through a specialized platform such as Shopify, Shift4Shop, Ecwid, Sellfy, or even Wix or Squarespace, that will allow you to create your store without having to write a single line of code. You can read my article on the subject here : https://sweekr.com/blog/create-your-online-store/
In the comments, you can add not only text but also elements such as:
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