The Association Overview screen (Game Menu >> Current Game section >> League Associations) is where you can view information about your league associations:

The left side of the screen displays the leagues in your association, and any upcoming events for those leagues. The center column shows information about league standings. The right column shows league leaders.

At the bottom of the screen, the left side shows association playoff information, while the right shows information about the association's history.

Use the Selected Association drop-down in the upper right corner to change which association you are viewing.