There are many places to skate in Toronto, both indoor and outdoor skating. Most outdoor skating rinks are at the parks. It's free to skate in these places as long as you have your own skates. If you don't have one, you can always rent out for a minimal amount.
Some of these places also offer shinny hockey sessions and skating lessons for all ages. It's never too young nor too old to learn how to skate.
These are the popular places where Torontonians go skating:
DUFFERIN GROVE PARK Address: 875 Dufferin St, Toronto Contact: 416 392 0913 Outdoor rink for skating (November 27, 2010 - March 13, 2011)
NATHAN PHILLIPS SQUARE Address: 100 Queen Street West Contact: 416-338-7465 Operational now