Welcome Maria,
It's great to have new people asking questions and commenting. So welcome!
Regarding your email question, if i were you (and I ain't), I would use a commercial service such as the one listed below. There's lots to choose from.
YouSendIt - Send large files - transfer delivery - FTP Replacement
If you just leave it on the internut, it will be scraped and abused by others.
By scraping, I mean bots will come along and take you content and republish it elsewhere. This is a given.
So save yourself some frustration and use a commercial service to deliver large files or use postal/courier services along with CD/DVD.
Regards,
Kevin