select the instrument you want to save from the insturment browser:
to save an instrument, there is a diskette-shaped icon in the lower-left corner of the file-browser:
…^look here - type a name ^here^, then click on the icon
the “gaps” feature is called “editstep” and is available here in the right bottom corner of the image:
RTFM = Read The F*cking Manual 
honestly, these basic things are explained pretty well in the video tutorial and in the manual. Please give them more attention.