What's the best way to send files as a link for someone to download or FTP?

I need to submit files (around 10MB) to a professional application. They request that we “email a link for download or ftp of files”.

Best, easiest, free way to do this? I am not savvy in this and in the past have used YouSendIt with a trial account that’s now expired. I’d love to know a good method that I can use every time, as this kind of thing is coming up more often lately (and in other cases with files too big to email). Since you might ask, I don’t have a personal website.

Thanks all.