Newbie question: So far, I've been making changes to my theme, live. If I make a mistake, every visitor sees it. Is there a better way to do this short of copying the entire wp site?
I've seen something called Theme Switcher on sites and it lets users switch themes. Is there a way that only I, as the administrator, can change the theme to a "testing" copy of my current theme and them make changes to that theme while everyone else is using the real theme? Do I need Theme Switcher for this?