I've been on this digital security kick. I did the basic stuff before, but now I'm encrypting my harddrive, using cloud back up in addition to backing up at home. I also started wondering about using public wifi. How secure is that?

Right now my security measure basically involves avoiding doing anything sensitive while using public wifi (banking, etc.), and making sure the URL had an https whenever I need to send a password. But I remain queasy, partly because the technical knowledge is beyond me. What do you do to stay secure while using public wifi?