I have been to some sites lately that have free designs.
Anyhow, on most of those "free" sites there is now a big green "download pdf reader" box. It is an ad, and you do not need to click on it.
Legitimate sites and downloads usually require Adobe Reader. If you do not have it installed already -- you probably do -- there is a gray/red/white icon to download it. It is not big and huge like the green pdf reader offered. Adobe reader is free, and allows you to see .pdf files but not edit them. You can print them and use them however you like though.