NOV 21 2008 UPDATE:

There’s been a spike in traffic lately and I have been having issues as well so I thought I would update this post. Google recently upgraded their BB sync program to include contact sync. In order to get my setup working again, I ended up having to uninstall Google Sync, download the upgrade and go from there. Not sure if this will do anything for you so go down this path at your own risk. Just thought I’d share. 
 

UPDATE: The following issues have been addressed in the comments:

1. Only being able to see the default calendar:(Thanks Duke!)

“The login name is CASE SENSITIVE, if ou don’t use the right case you will only get the “default folder” option. Hope this helps.”

And another great tip from AAGie (Thank you too!)

“I figured out a big problem here. I was having this “Default Calendar” only issue, even though I tried all the fixes suggested here. Turns out I’ve aliased my “work” (non gmail) account to work as a login for all Google services, and I normally use that, and the same password that works for my official “gmail” login name to login to Google services. Well–if you do that (use some kind of aliased login account), turns out you only see the Default calendar. Go try your @gmail.com account instead & you’ll be very happy! (You do still have to use the “Options” feature after the first Sync & go select all the Calendars you want to turn on, but they’ll be there!)”

2. Your phone doesn’t support end-to-end secure connections: No guarantees on this one, but my suggestion in the comments was:

“One thought - go to the menu -> options -> Advanced -> Tcp. In the field labeled APN, enter: wap.voicestream.com. Leave the username and password blank and try syncing again.”

Original Post

Since my post expressing my delight about the launch of Google Sync for the Blackberry I’ve been noticing a fair bit of traffic around how to sync multiple calendars using Google Calendar Sync. This is a quick & dirty guide and assumes you’ve installed the app and got it working. After that, do the following:

1. Go to your blackberry applications menu and load Google SyncStep 1
2. Click the Menu Button and Select Options Step 23. Select the Calendars You See and Click the Thumbwheel/trackballStep 3
4. You should see all the calendars associated with your Google AccountStep 4
5. Select the Ones you want and Use the “Go back” key to exit out

6. Save PreferencesYou’re done. Enjoy.

For your reference, here’s a link to the Google Calendar Sync Help Pages >>