Apologies for the general question, but I spent some time looking for an answer and couldn't find anything.
I often find myself in a situation where I need to make tweaks to a live site based on a client's feedback after going live, so I'm wondering the best way to quickly make changes on the live site without disruption.
Presumably it's possible to duplicate the live theme, rename it in style.css so that it's considered a 'new' theme yet still uses the same database etc. and then work on that? The question is, how would I view that new theme and then switch to it once all updates are done?
One day, I'll need to get my head around GIT as from what I've heard that would solve this kind of problem in a very safe way.