Review for Provider for Google Calendar by dustigroove
Rated 3 out of 5 stars
This plug-in mostly works as advertised (although I did encounter a few nuances). If you are a casual user this is the quick-n-easy way to go.
However, if you are okay with getting your hands a bit dirty, GCALDaemon offers a much more robust solution. I use it to synchronize my Google Calendars locally to Thunderbird/Lightning simultaneously with Evolution (this way my daily events show under the Date/Time applet when I click on it for super-quick viewing).
To create your own collections, you must have a Mozilla Add-ons account.