Changing admin and other settings in WordPress does not require you to be a WordPress genius. For instance, you can change your login, favicon, and default email address easily if you know just a little bit about WordPress. Plugins such as WP Total Hacks make the process a whole lot easier though.
WP Total Hacks lets you cover more than 20 settings in WordPress. It allows you to change your login and admin logo. Modifying your favicon is also possible. You certainly don’t want to leave WordPress notifications showing up when you don’t need to. WP Total Hacks removes update notifications except for admins. It can disable auto save feature too.
WP Total Hacks is a nice little plugin to have if you want to change minor settings in WordPress. It does not slow down your site which is nice.