You may have thousands of pictures. Most pictures are stored with the same obscure file names that the camera assigned to them making the folders they are stored in resemble a bottomless junk drawer.
Using the old way, finding the pictures you need for your slide show would be a chore. The individuals you are searching for appear in hundreds of photos which are spread out in various folders.
With tags, you don’t have to reorganize or rename anything. To add a tag, you simply open the folder with your pictures, click a photo you want with an individual in it (say your mom) and then click the area next to Tags in the Details pane at the bottom of the folder window. (If the Details pane isn’t visible, click Organize, click Layout, and then click Details Pane.) In this case, type the tag “mom” into the Tags box, and then press ENTER.
With tags, there’s no need to reorganize or rename files—just tag them
For your slide show, let's say you need to find all of the pictures of your mom and dad. You can tag photos with words like “mom” and “dad”, and maybe “family” or “cat” or “holiday”, and then separate each tag with a semicolon in the Tags box. To tag a bunch of pictures at once, you can select multiple files, and then create tags that apply to all of them.
You can apply tags to many files at once