What are CubaseLite 6 device settings with Tascam 366. I cant record anything, is it enough to connect Tascam with USB connection to laptop or should I need any else connection.
Have you downloaded and installed the proper driver for your interface?
http://tascam.com/product/us-366/downloads/
Interface connected before launching Cubase?
Have you read the f’n manuals? 
You might want to give some details about your computer setup, too …
In the meantime, this might help … ?