Using a pair of cutters, carefully snip/tug away excess filament on the extruder nozzle. Be careful not to scratch the nozzle.
Now would also be a good time to remove any leftover debris from the printer, especially those on the build plate.
Menu Sequence: ENTER → Print from SD Card → file.gcode
Once the extruder head and bed is hot enough, the printing will begin.
Do watch your print for the first few layers for problems!
If you encounter any problems, please review the troubleshooting procedures or call Fab Lab staff for help.