I'll be starting PGY-1 in July and I was wondering what groups to join and when.

ACP? AMA?

now or after July 1

thanks

AMA is a joke (only AMSA is worse).

I'll stay in ACP and join SHM.

join what you want, but wait until you are an intern ... your program may help pay for it

join what you want, but wait until you are an intern ... your program may help pay for it
I am more worried that most of these organizations would spam you with tons of junk email AND/OR fill your mailbox with publications/journals.