I got a new 4-track cassette recorder a year or so after...

I got a new 4-track cassette recorder a year or so after high school. For a while I would just stare at it thinking, how am I going to do this if I don't play guitar or keyboards? How am I going to write and record a song if I don't know how to play any instruments? I mean, I played the violin, but I didn't know anything about how to work a 4-track.