Obtaining the unix o/s

[Dominick DiMantova]

Hello,

My name is Dominick DiMantova and I have a question, or two:

1. what is the difference  in either purchasing the media or downloading
the software? If I want to download the software, when I go to one of the
ftp sites, I'm looking at the ste with alot of folders; how do I know what
I need to download? 


2. Is X Windows a separate product or does it come bundled with freebsd?


Thanks.



Sincerely,

Dominick DiMantova