Renaming menus

[ianaddisonuk]

Hi there, i've been messing about with Joomla all day and im trying to figure out how to rename the menus. I dont want a parents menu or a curriculum menu. I wanted to rename them to other things. I can rename the menus, but it doesnt change the banner at the top, am i doing something wrong?

 

 

also...with the log-in section, how do i set that up to let people log in?