Mendeley

• Enter a keyword in the top right-hand search box to find documents as you type
• This search includes global notes and tags by default
• Filter by clicking the arrow and selecting from the drop down list

• Click the 'New Collection' option in the left hand pane to a new collection and name it.
• Drag and drop files or references into a collection

Tip:  Start with search to help find things quickly

The real usefulness of collections is for reducing the scope of your search, or for allowing a quicker browse of your Library

• Select a document and add tags in the right hand details pane
• Search for tag names to find a group of documents easily
• Tags are similar to collections, however, it’s easier to add lots of tags to a document than it is to drag it into several collections