free shipping for non-tangible goods
I have books which are available in both hard copy and download format, and am also selling training courses. I have shipping rules set up for tangible goods but I can't think how to set up a free shipping rule for downloads and courses. I don't think I can do it with a new column in the products table because in the example of the books, there is one product with several options, and the no shipping rule would only apply to the downloadable options of that product. Could you give me some guidance on how to set up this rule?