Answer 1: The e-mail containing the download instructions is normally sent within a couple of minutes, but please allow half an hour to an hour for it to arrive when the PayPal system is very busy.
Answer 2: If you've paid by e-check, the e-mail containing the download instructions will be sent when the e-check has cleared and funds have been transferred. This normally takes 5 or 6 days. PayPal recommends sellers not to ship any items until the eCheck has cleared. Therefore you will receive the download information after your eCheck payment clears.