No, you do not have to be a programmer.
Santu is so easy to use, thetre is no porgramming involved at all.
To add buy now buttons and a shopping cart all you have to be able to do is add normal links to your site.
You can use our buy now button, or any image you like.
Have quick look at the video at http://santu.com/en/how-to-add-a-shopping-cart-to-a-free-wordpress-com-blog/.
While this is for WordPress and not for the editing solution you may be using, the way you add buy now buttons to any shop works the same for all editors, which allow you to work in visual mode like a Word document, for example (What you see is what you get).
If you want the Shopping cart to be part of your website, you can copy one line of text into the source code of your pages - but again this is very simple and does not require programming. We have a simple video explaining this, too.
Santu also supplies you with a free Santu store, which you can also use - but it's an option - many of our users continue to use their own website.
Of course with Santu you can also then add your products to Facebook, Pinterest or add buy now buttons to your printed brochures, if you want.