Website Update

I need some modifications on my site. 1. Change so that the Categories on main page get listed in alphabetical order. From main categories from a-z and sub categories from a-z. 2. Control panel – Add code so that any action you do, it will take you back to original view. For example: If I click Site settings, change it and click edit. I want the screen to perform the action and then return me back to the same screen.