The EmacsWiki node on
Emacs for Mac OS
will give you advice on a number of OSX-specific issues. More specific to your question, you can adjust the
as you like:
Aside: you might see these as
ns- in place of
mac- in some
ns-, I believe, is referring to
NeXTSTEP, one of the
sources for OSX.
You should be fine with your setup to make Emacs interpret the
command key as control:
(setq mac-command-modifier 'control)
Put that in your
and it should take effect the next time you start Emacs.
For keybindings, the first stop is the Emacs manual node on
Customizing Key Bindings.
Another good resource is Mickey Petersen's
Mastering Key Bindings in Emacs.