[chirp_users] Noob question re: Mac setup

Greetings: Brand new to CHIRP and have just cloned my FT-857 (in Windows, running Parallels on a Mac).

I'd really like to figure out how to run it natively in OS X and have installed the Python package and the latest CHIRP build, but can't get CHIRP to see any ports other than a couple of Bluetooth entries in the ports list. I'm also fairly new to Macs, so am not sure how to manually address the port from within CHIRP.

Can anyone point me to useful startup documentation for Mac users (assuming my radio interface cable is good, since it works well for me on the Windows side)?

Thanks Matt