First, you're dealing with an ignorant old woman, so be patient and kind.
This is in re my employer's website ( drlindahumphries.com [I know it's ugly but the doc loves it and it's been very effective]) but I will refer to it as mine to simplify things. On my website I wish to offer downloadable self-help articles for sale. The canned shopping cart application from PayPal works thusly: customer adds article to shopping cart, PayPal completes the payment process and redirects customer back to my website. HERE'S THE HITCH: PayPal will only redirect back to ONE, single URL. I have multiple different articles for sale. Will the WordPress shopping cart app(s) permit multiple, different redirects after checkout? Alternatively, will one of them generate an automatic email to the customer that contains a link to a download page?
How do the WordPress shopping cart app(s) handle security of personally identifiable info? (One of the main attractions of the PayPal cart is that they are responsible for all that.)
There are several different WordPress shopping carts -- please include any advice on which version (if any) would meet my needs.
Your help (and patience) will be much appreciated! This is a small therapy practice and we can't afford to hire a programmer!