I initially tried adding buttons from Google gadgets. This was total ignorance on my part because where would the money go? There was no account set up. After a couple of weeks pondering options (realizing - of course - that I am no web master and don't know HTML from any other coding therefore scared to death of screwing up something), it suddenly dawned on me that I have a Paypal account. Duh.
After returning to Miller's Wrapped Expression open window, I clicked where I wanted to put the link and opened the HTML window. I scanned the coding for the description of the sample picture but couldn't find it. So I opened "Find on this page", typed in "lion" and hit the "find" button. Voila! There it was. I pasted the coding from Paypal beneath the picture name and clicked "preview". Ah, I did it correctly.
I did several before I realized I needed "Add to Cart" and assorted sizes rather than "Buy Now". No problem. I just went back, deleted all the "Buy Now" buttons from my web page and Paypal, and created new buttons after adding three different sizes of candy wrappers along with prices.
It wasn't easy but I managed to do it with little knowledge and a little reading.