There's something archaic about paper "handouts" for educating patients about disorders, drugs and other treatments. Emailing a Web URL is too much trouble, but so many patients have smart phones now I plan to try QR codes. I'll display this page on my tablet PC and ask patients to scan the appropriate codes. I can add more as needed. Other candidates: The Big Book online, doctors and psychotherapists to whom I frequently refer, advocacy and support organizations, etc.
I generated codes at http://www.qrstuff.com/ and created the document in Google docs. Printed to .pdf with CutePDF. (All free.)