iPhoto

Hi - New to a Mac. Is there any way I can make photos loaded to the mac appear in both my and my wife's user accounts without each of us having to load into iTunes separately?

You don't mean iTunes do you???

Oops. You are correct, I meant iPhoto.

I think there is a way to set visibility to both of the accounts.

There may be a setting somewhere (probably in Settings>Sharing) but the easiest way I know is to create a Shared folder on your Mac and then move or copy the iPhoto library to it. Navigate to it with Finder and Double-click on it to launch iPhoto.
Both of you will then be able to access and edit the library.