icalApple offers these great tips for using iCal.
With your busy schedule, you depend on iCal to make certain you know when the kids need to be at the dentist and when you’re supposed to be in Philadelphia for the sales conference. Since this information may be just as valuable to your spouse, it would be helpful to share your calendar, and iCal offers a simple way to do so.

  1. Select the calendar you want to share.
  2. From the Calendar menu, choose Publish and fill out the form in the sheet that appears.
  3. Click Publish. iCal displays the URLs where you can view your schedule online and lets you either visit the page or send email to those with whom you’d like to share your calendar.