Forum Moderators: buckworks
Here's the difficult part - making sure only buyers of the books can download them. Again, generally speaking, you wold put these products in a secure directory of on a secure servver. When a person would make a purchase, they would get a [b]unique[/i] password or product id number with a url to the download. Unfortunetly, I cannot advise you on the technical aspects of setting this up - I can only emphasize that it has to be secure and utilize unique id's or an individual could download as many copies as they want.
I would be remiss if I did not point out that once a person downloads a copy, unless there is some form of copyright protection, they could re-distribute it.
Hope this helps some.
Marshall