I would recommend you to check all type of reports to see their content and determine whether they match your needs (in Reports > Quick Reports).
Once you have identified reports required, configure them in Scheduled Report tab, so that you will receive them on a regular basis (and not only on-demand like in Quick Report tab).
If you rather want to have alerts sent via email when a specific action occur (threshold of out-of-date clients exceeded, new infection detected, etc.), refer to notifications (http://www.symantec.com/docs/TECH105865).