1) click on the orange button (at the bottom of the sidebar) by the word "Posts".That's it. You might have to sign up, but it's as easy as checking your e-mail to use. It works just like your inbox and cc's you on any blogs you subscribe to the moment they post. Naturally, subscribing gets much easier once you're into it. I get too many subscriptions these days, but they don't all post every day... and I'm getting re-he-heally fast at skimming for the posts I'm most interested in each day.
2) click on your choice of Google, Yahoo or one of the others.
3) Follow the instructions. (I like the Google Reader option.)
By the way, if you ever want to see which recent posts made me say "Hmmm" today, just scroll down my sidebar to where it says