I'm new in Ubuntu. So far, I used only the Windows. In Ubuntu, irritates me the order of buttons OK / Cancel. In the Windows OK button is the first and then Cancel button. In Ubuntu it is vice versa. How do I change it? What should I do that at all dialogs was the sequence: OK / Cancel?
You can't change that (without changing the program). It's the order recommended by the GNOME Human Interface Guidelines and therefore The Right Way To Do It in Ubuntu.