You can assign one or more tags to selected photos. A tag can be one or more words that you want to associate with those photos.
To add new tags to photos, select the photos you would like to tag, then do any of the following:
Choose
Type
Drag the selected photos and drop them on the desired tag.
When you use
To change which tags are associated with a particular photo,
select that photo, choose
To delete a tag entirely, select that tag in the sidebar and choose
When you create a tag, it will appear in the sidebar under the Tags item, which is hidden if there are no tags. Photos can have multiple tags attached to them, and when you click on the name of a given tag in the sidebar, you will see all the photos associated with that tag.