Just type the name of a person, subject, place, and/or year that might be associated with the photo. You don't need to type in all of a word for a match to occur, but the search engine assumes all words (or partial words) must be present.

You can also check out YouTube videos, or my Instagram feed if you just want to look around.

The "Find Photos" button causes thumbnails to show for all results -- otherwise, thumbnails only appear for 100 or fewer matches.