Collections are like Lightroom’s answer to traditional folders, but they have extra benefits. You can set up your collections just like a normal folder structure, using Collection Sets to house them. But the structure remains independent of your file locations on your hard drive. So you can use it like a secondary structure to sort your photos, without having to copy and paste them into different locations on your drive. This also means an image can be present in several collections at once, without making storagehogging duplicates of the file. To make a collection, click the plus next to the Collections Panel. The panel is present throughout Lightroom’s Modules, which makes it easy to take a set of photos through the Develop Module then on to the Print or Slideshow Modules.