I'm quite new to Next.js and Shopify but I'm trying to add Shopify's BuyButton.js sdk (https://shopify.github.io/buy-button-js/) to an existing, simple website that's running Next.js 14.

Where is the best place to initialize the Shopify client? I only expect to have a single page on the website connected to my Shopify store.

Also, would it be possible to just embed a Shopify Buy Button into the site or is that only possible when using something like Wix or Squarespace?