New to OA2 - customizing

Creating a new internal company portal. Trying to learn OA2 by doing some customizing. Two Questions:

1. How or can I change where the little house/home button points too? I need for it to go to a specific page.
2. On the user's dashboard, is it possible to remove the settings button and move those items to the button (user's name) above?

Thank you,
Tom