You can get the ISO's and the MD5SUM's right here at the LQ ISO
site, as well as at places like LinuxISO
You probably do not need all the CD's, and most distros will offer a fully functional system with just one or two ISO's. Please consult Debian for more info. BTW you might want to also consider doing a net install - it's actually pretty smooth, and saves you a huge amount of time downloading and burning. More info at Debian
Good luck with it and welcome to LQ! -- J.W.