on the homepage there is a button saying customize near the top, click this and the page will refresh and give you options to edit, click drag and move items, remove from main page etc.

As to newsfeed on main not being visible to non logged in members I don't think this is possible, someone else might know more about this and if it's possible, I looked and can't see a way to do it unless you close your site off to guests.

Michael,  currently there are no this kind of settings for the newsfeed. You will either need to modify the code. Or let guest users see the newsfeed but deny them permissions to actually view profiles, forum topics and etc.  This can be done via user role permissions.