Documentation is available from various places:

• Press 'F1' in your application (e.g. Cubase) to open the manual as .pdf document.
  In newer software versions, this will open the online documentation given that your computer is online.
• The 'Help' menu of your software also provides access to documentation and/or online help.
• Go to www.steinberg.help for online available documentation of our latest products.
• Manuals for older products can also be found on the individual support websites.