I've been reworking the signup/download process to be much, much simpler. And now -- huzzah -- it is! Just go here to sign up your paper. You'll have Sheldon strips in tomorrow's issue! Bam!
And hey! If you're a student who wants Sheldon in your college paper...go here to make it happen!
[EDIT: I've already had a few non-college papers/magazines/newsletters e-mail me to ask if they could sign up for Sheldon in their publication. The answer is yes...but depending on your profit/non-profit status, there may be a small fee. Questions? Just e-mail me!]