If you are new to STN^®, the training and reference materials below can help you get started. 

• Basic STN Commands (PDF)
• STN Pocket Guide
• Search Bibliographic Databases: An Introduction (PDF)
• Search and Display Substance Information (PDF)
• Current Awareness Alerts (SDIs) User Guide (PDF)

The STN Database Summary Sheets page contains detailed descriptions of all databases on STN.

Help while you are searching 

• Help menu - when using STNext^®or STN Express, click the Help menu icon or link to access the STN Help file in a new browser tab.
• HELP command - when you are performing command-line searches, type HELP at an arrow prompt (=>). Type HELP COMMANDS at the arrow prompt to see a list of commands available for the database you are filed into. Type HELP and a specific command to learn how the system functions, For example, type HELP EXPAND to learn how CAplus allows you to look at terms within the search index.