A good advice is to ONLY make changes in a “Child-theme” because if you make changes in the original one, it will be overwritten if/when the original theme is updated.
Changes you make in the “Child-theme” will not affect the original, but WP reads the “Child-themes” settings etc. before the original and use the “Child-theme” instead of the original. Does this make any sense?
You can read much more about “Child-themes” in the help menu and you can google it, lots of stuff about it.
The other things I don’t know much about, sorry! ??
BR Bossen
