CalendarReview

Kaly of makeuseof.com has these Google Calendar tips:
Google Calendar is definitely one of the coolest online calendars and task-management applications. It has everything an average user may wish for: speed, non-cluttered design and lots of useful and never failing features, i.e. calendar sharing, quick event entry, follow-up reminders (SMS/email), RSS feeds, etc. In addition to it’s standard feature set, there are hundreds of a user-created browser addons (mainly firefox) and problem-specific tips making it even better and more flexible productivity tool. Below, I have listed some of the better ones, if you’re Google Calendar user (or thinking of becoming one) than check them out.