Need Advice on Selling Music for First Time

I’m not sure if this is the best forum for this question, but I have been a Sonar hobbyist for several years and I’m finally at the point where I would like to experiment selling my own music.  I do not wish to spend much (or any) money in this effort.  It’s just a “trial balloon.”  I’m looking for something analogous to selling eBooks on Amazon Kindle, which I am doing now successfully without having to invest a single penny.  There must be something similar for music.  I have seen several options on the Internet, but it’s all a bit confusing and so I do not know which option might be the best for me.
 
Not sure if it means anything, but the style of my music mainly appeals to older Americans (over 55) and much of it is politically incorrect black humor.
 
Thanks for any advice!
 
Greg