Getting StartedNewbie's Guide to FlickrHow To Create Flickr Slideshows
Basic Flickr Jargon
-A set is an array of images of your own, collected together on whatever basis you like.
-A collection is an array of sets.
-A group is like a set, but contains images from a number of different flickr members.
-A tag is a non-hierarchical keyword or labled assigned to a picture, note unlike organizing folders you can apply more than one tag to a picture. See also What Why & How to Tag
ToolsThe Great Flickr Tools Collection