What version of Internet Explorer? In my version, i can right-click one of the existing buttons (not favorites) and select 'customize' to add/remove buttons..
Also you can get to your home page by pressing the alt key and the home key at the same time (alt + home)
The alt key is by your space bar, the Home key is usually to the right of your main set of keys... near the PgUp PgDn and End keys...
......now the word Home is starting to look really really weird... even sounds weird... yay, it's one of those days.
More information about text formats