In this frame JavaScript and HTML is written which may be cut and pasted or otherwise adapted into your pages. It is impossible to guess exactly how YOU will want to write a page so this cannot be a "100% no-brainer".
   Note that, if a quantity is input, you can 'BUY' the product you have created on the above form.  This should help you test the interface and become familiar with using Shop@ssistant.

   It is also useful to use the WEIGHT select to create products of known weights to test the shipping costs returned in the Order Summary (reached via the Cashier button in Review)