Changing themes and keeping your settings?

I cant even get a homepage to pop up. any suggestions? go to settings and put in the page I want as my homepage but it doesnt work when I go to the website. Thanks if you can help

Common guys someone must know this? :p

Look If I’ve went in an edited the code of a theme, is it saved in the theme then?

Guys?…

Do not edit the Twenty Eleven theme. It is the default WordPress 3.2 theme and having access to an unedited version of the theme is vital when dealing with a range of site issues. Create a child theme for your changes.

Yes I know it is. I’ll probably do that in the future to.
But I would still like to know if the changes are saved when you switch from theme to theme…please

Yes – theme settings are saved on a per-theme basis.

Coolio.
When you speak about themeupdates, are they automatic or volountary?
For example can I ignore making a child-theme by ignoring to update the current theme when it is updated and thus ignoring all the problems?

I currently use OptionTree plugin to have global settings across themes.

https://www.ads-software.com/extend/plugins/option-tree