Here is a list of Groups and Clubs that you might want to look into joining.
For a list of local coin clubs, check out this website
for a state by state coin club list:    Coin Clubs

American Numismatics Association
money.org

The American Numismatic Society
amnumsoc.org

CONECA: The Combined Organizations Of Numismatic Error Collectors Of America
conecaonline.org

F.U.N.:  Florida United Numismatist
funtopics.com

Central States Numismatic Society
centralstates.info

The Pacific Northwest Numismatic Association (PNNA)
pnna.org