To activate the features, run the following stsadm command from the command prompt to enable the feature
stsadm -o activatefeature -id "73EF14B1-13A9-416b-A9B5-ECECA2B0604C" -URL "http://siteurl/sitecollection"
This will enable the "TaxonomyFieldAdded" feature on the team site which should bring the "Term Store Management" link in the site administration section of a site. This will also enable you to add the Managed Metada column to your lists and content types.
On a side note, the following features are related to the taxonomy in SharePoint
All the above features are "hidden" which means that you can't enable them from the SharePoint UI