Libraries and TL’s can independently and departmentally decide what arrangement best suits their resources and setting. Resources can be sorted by:

• Dewey Decimal Classification
• Alphabetical order
• Occasion
• Type of material
• Level of difficulty
• Genre, and even
• Colour

Tools to assist TL’s in the organisation of resources can include:

• Library catalogues
• Periodical databases
• Citation databases
• Image and other special kinds of database
• Bibliographies and subject guides
• Online subject gateways and directories, and
• Search engines

All of which include various amounts of metadata.