I enjoy the study and collection of rocks and mineral specimens, I guess you could call me an amateur geologist 
That is a cool hobby that I dont hear much about. 
Well it has actually risen in popularity, one of the reasons is you can begin by simply picking up rocks.
That is really cool. Where can I learn more about rock collecting?
There are many groups that search for specimens and compare them together as a hobby, I'm sure you can find meet-ups locally.
I didnt even think of that. What else can you tell me about rock collecting?
The first amateur geologist were prospector, they were looking for things of value and would simply keep everything they found hoping that it would be valuable on resell.