There are many tutorials out there but they are all too complicated or/and give you paid, complicated tools to do the job.
Both tools on this post are free, will sit on your tray and won’t bother you, while maintaining your contacts and calendar synced. I’m gonna show you the easiest way to do it.

Download page: https://web.archive.org/web/20090522185324/https://www.google.com/support/calendar/bin/answer.py?answer=89955 (Direct link to download)
1. Read through the Google Calendar Sync Terms of Service, and click **I Agree**.
2. Follow through the Installation Options and click **Install** to finish the set-up process.
3. Once Google Calendar Sync is installed on your computer, the Google Calendar Sync Settings window will appear:
Just enter your email/password and click Save. If you don’t want to sync back to Google Calendar choose “1 way: Google Calendar to Microsoft Outlook”
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