Life time interest. First time in public !

I have been a rock hound for as long as I can remember. I cannot walk ( or ride my horses ) over stony ground without being compelled to look down. I no longer ride my thoroughbred when doing this.....not a good idea ! Recently I have been finding some great rocks and because of medical issues, my guy has Kidney cancer, I would like to sell them. I do not need top dollar......but I would like to learn what that is these days. And I could use advice as to how to go about doing this. Anyone who has time, please contact me through Facebook......Katherine Kennedy in Denmark Township, or by email....kennedy.kat@hotmail.com/ Any help/advice would be gratefully appreciated.