Welcome to the resources subdirectory!

Going Down

subfolder/file_name

A URL that starts with the name of the subfolder lets the browser know to go INTO that subfolder to find the file it's looking for.

The relative path from links.html to otherpage.html is
resources/otherpage.html

Going Up

../file_name

A URL that starts with ../ comes OUT OF the current folder and into its parent directory.

The relative path from otherpage.html to links.htmlis
../links.html