There is a great post over at Lifehack.org about using Gmail and Gcal to take charge of your daily tasks and to do lists.

There are a million tools out there to keep track of your tasks, your appointments, your emails and reminders. But let’s face it — each of them have their drawbacks, and finding the right combination can be an ongoing quest.

Many people also love Gmail and Gcal as two of their online tools of choice – they’re simple tools that get the job done fast, wherever and whenever you need them. If you count yourself among this group, here’s a guide for using the Gmail/Gcal combination as your online information center.

Follow THIS LINK in order to check out the article. Well worth a read, especially if you use, or are thinking to use the Google applications as your chosen method to implement a GTD system.