How can I add a link to the purchased training in the Customer’s email confirmation?

To include additional information in the email confirmation you can add details to the Product Price Additional Product Details field.

For more information on editing the Product Price Additional Product Details click here

Within that field you could include a link to the course as listed on the My Files page using the format:

https://yourlearningcartsite.com/AccountFilesDetails.aspx?ProductID=XXX
(where yourlearningcartsite.com is your site url and XXX is the Product ID)