Hello @mistyw and thanks for your question. I know it can be confusing when you're starting out building your website. I'll add some links below to help with some subjects about adding inventory items online. If you are going to mainly sell online, I'd start by clicking on "Online" in your dashboard. If you also sell in person from a register or phone app (at farm markets or a store), you can start from your Item Library and add them there. Just a note, when you add an item into your Item Library, it may not automatically show up in your online store . You'd have to go Online > Items >Site Items. Here you can add a New Item or find an item that you already created.
Like I said, if you're only dealing with online items it might be the least confusing to go right to the Online section.
https://squareup.com/help/us/en/article/7046-add-a-physical-product
https://squareup.com/help/us/en/article/6879-add-items-and-categories-to-your-square-online-store
https://squareup.com/help/us/en/article/6898-display-featured-items-in-square-online-store
I hope this helps you get started with your online site. Feel free to ask anything else you need help with. All of the Square sellers in the Community here love to help and this is great place to find answers and get support.
