Lightroom Collections are a great way to keep your photos organized for quick exports and sharing.
Before we dig in, however, let's back up a step. Adobe Lightroom is designed on the principal of non-destructive editing, which means that all the edits you make in the software do not change the original raw image file. I like to think of these edits as a catalog "layer" applied over the raw files. Collections, virtual copies and other Lightroom functions use this principal to provide powerful organizational features.
What are Lightroom Collections?
Collections are a virtual method of grouping similar images into folders, where a single photo can appear in multiple collections/folders. The best part of this is that building Collections doesn't affect the directory where your raw files are stored - this is all virtual, so you can go bonkers!
My Lightroom Directory is organized by year and then by location. My Collections are organized into many different groups that help keep me organized: images featured on stock websites, photos I'm submitting to requests, specific collections like fluoro diving, photos I've shot specifically for workshop presentations and tutorials, photos I want to remember to share on social media, photos I've shot for sponsors, etc.
How Do I Set Up a Lightroom Collection?
The Collections panel is located at the bottom of the left column in both the Library and Develop modules, so you can create a collection and add photos from either module.
1) Click the + button next to Collections (make sure the arrow to the left of Collections is clicked and facing down).
2) Type in the name of your Collection and click Create. Note that if you want to organize multiple collections within one main folder (e.g. folder = Landscapes, with Collections inside for sunrise, sunset, ocean, lakes, etc.) then first create a Collection Set, and then create a Collection inside of that set.
3) Now you can just drag and drop images from anywhere in your directories to that Collection.