How do I jump to the buttons? For example say I am in Notepad and I want to save my work. How do I press on the Done or Details buttons?

Also I am on the main menu screen that shows all the different applications such as Calendar, Documents, Keyboard. Ctrl and the up and down arrows let me select icons vertically. How do I jump over a column of icons to the right. Ctrl + right arrow does not work.

Thanks.

Kevin